help me understand the linear equation

Help Me Understand The Linear Equation

Answers

Answer 1

Answer:

y = 4x - 4

Step-by-step explanation:

Slope intercept follows the form y = mx + b

m represents the slope

b represents the y intercept

To find the slope of a table you can find the constant change in y over the constant change in x. The y values 0, 4, 8, 12 are increasing by 4 every point meaning the change in y is 4. The x values 1, 2, 3, 4 are increasing by 1 every point meaning the change in x is 1. Making the slope 4/1 or just 4.

Now use what you know: y = 4x + b to find b, we can use any of the coordinate points to substitute. I'm going to use point (1,0) where 1 is the x value and 0 is the y value.

y = 4x + b

0 = 4(1) + b

Solve for b

b = -4

:)


Related Questions

help please
The cost of having a window fixed is $125 plus $25 per hour of labor. Using h for the number of hours of labor, write an expression that represents the total cost.
25 + 125h
125 + 25h
150h
125+25 over h

Answers

I believe the answer would be Y=125+25(h

Answer: 125 + 25h

Step-by-step explanation:

The total amount of money is the cost of the window plus the amount of hours.


Is the distance from the center of a circle to a point in the interior of a circle sometimes, always, or never less than the radius of the circle? Explain.

Answers

The distance from the center of a circle to a point in the interior of a circle is always less than radius of the circle.

It is given that there is a point inside the circle.

We have to find that whether its distance from center of circle is sometimes, always, or never less than the radius of the circle.

What is the radius of a circle ?

The distance between the center of a circle and any point on the circle is called the radius of circle.

We know that ;

Radius is the distance between the center of a circle and any point on the circle.

Let's assume three points which are A, B, and C, where A is a point inside circle, B is a point on circle, and C is a point outside circle.

Also ;

O is the center of circle.

So ;

OA = the length of the line from center to point inside the circle.

OB = radius of the circle.

OC = the length of the line from center to the point outside the circle.

So ;

We can conclude that ;

OA<OB<OC.

or

The length of the line from the center of a circle to any point inside the circle will be always less than it's radius.

Thus , the distance from the center of a circle to a point in the interior of a circle is always less than radius of the circle.

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Points P, Q, R, and S are collinear Point Q is between P and R, R is between Q and S, and PQ congruent RS. If PS=23 and PR= 18, what is the value of QR?

Answers

The value of QR when points P, Q, R and S are collinear is .13

We are given that:

Points P, Q, R and S are collinear points.

Also,

PS = 23

PR = 18

We need to find the value for QR.

Now, we have that PQ is congruent to RS.

So, This means that PQ = RS

This can also be written as:

PR - QR = RS

18 - QR = RS

Also,

PR + RS = PS

Substituting the values, we get that:

18 + ( 18 - QR ) = 23

18 - QR = 23 - 18

18 - QR = 5

QR = 18 - 5

QR = 13

Therefore, we get that, the value of QR when points P, Q, R and S are collinear is .13

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State whether each sentence is true or false. If false, replace the underlined word or phrase to make a true sentence.
An equilateral triangle is always equiangular.

Answers

The given sentence about equilateral triangle is true.

A statement is given in the question.

We have to tell whether the statement is true or false.

What is an equilateral triangle ?

An equilateral triangle is a triangle in which all sides and all angles are equal.

As per the question ;

The statement given is , "An equilateral triangle is always equiangular."

Let's check whether it is true or false ;

We know that ,

Equiangular meant equal angles and we know that all the angles of equilateral triangle are equal.

Also ;

An equilateral triangle can also said as an isosceles triangle, that meant any two sides that are equal have equal opposite angles.

So ;

All three sides of an equilateral triangle are equal, all three angles are equal, too. We can conclude that every equilateral triangle is also equiangular.

Thus , the given statement about equilateral triangle is true.

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does someone mind helping me with this? Thank you!

Answers

Answer:

32

Step-by-step explanation:

Sorry for not neat explanation but i hope u understand

Answer:

32?

Step-by-step explanation:

when i did it with a Pythagorean theorem calculator i got 32

please help
please good graph​

Answers

You can see the graphs in the attached image. The order is the same as on page. Note that 7. and 8. give us an infinite number of solutions, and no solutions, respectively.

Help Please
A woman has a total of $9,000to invest. She invests part of the money in an account that pays 7%per year and the rest in an account that pays 9%per year. If the interest earned in the first year is $710, how much did she invest in each account? She invested $ ____at 7%and $_____at 9%.

Answers

Answer:

5000.00 gives us 350

4000.00 gives us 360

Find the area


(Simplify your answer)

Answers

Answer:

why isnt there a backround base? it wouldnt be area if isnt so

Step-by-step explanation:

The area is 960 m

because 48*15=720

and 10*24=240

720+240= 960

Given g(x)=-2x^(2)+1, find the indicated values. g(0)

Answers

Answer:

[tex]g(x) = 2 {x}^{2} + 1 \\ g(0) = 2 ({0})^{2} + 1 \\ = 2(0) + 1 \\ = 1[/tex]

Write the equation of the line that is perpendicular to x + 4y = 12 and passes through the point (-8, 5) in slope-intercept form.
y = mx + b

m=
b=​

Answers

The equation of the line is: y = 4x + 37

m = 4

b = 37

How to Write the Equation of a Line in Slope-intercept Form?

The equation of the line that is perpendicular to x + 4y = 12, will have a slope that is the negative reciprocal of the its slope.

Rewrite the equation, x + 4y = 12 in slope-intercept form:

4y = -x + 12

y = -x/4 + 3

The slope is -1/4. Therefore, the slope of the perpendicular line would be 4.

Substitute m = 4 and (a, b) = (-8, 5) into y - b = m(x - a)

y - 5 = 4(x - (-8))

y - 5 = 4x + 32

y = 4x + 32 + 5

y = 4x + 37

The equation of the line is: y = 4x + 37

m = 4

b = 37

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Evaluate each function for the given value of x , and write the input x and output f(x) as an ordered pair.
f(x) = (2/9)x - (9/2) for x=9

Answers

f (9) =  - 5/2 is the output for the given input .

How can you tell whether a function is linear or not?

Looking at a function's graph will reveal if it is linear or not with the greatest ease.When a linear function is plotted on a graph, a straight line is formed. A nonlinear function is curved in some way; it does not form a straight line.

f(x)= (2/9)x - (9/2)

Put x = 9    ⇒   (2/9) * 9 - (9/2)

                ⇒   2 - 9/2

                ⇒  -5/2

Therefore f (9) =  - 5/2

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Solve by completing the square. Express answer in a simplified radical form when possible. When not possible, round to nearest hundredth.
x^2+6x+2=0

Answers

Answer:

[tex]{ \tt{ {x}^{2} + 6x + 2 = 0}} \\ { \tt{ {x}^{2} + 6x = - 2 }}[/tex]

- Add the square of the half of the sum on either sides:

[tex]{ \tt{ {x}^{2} + 6x + ( { \frac{6}{2}) }^{2} = - 2 + {( \frac{6}{2}) }^{2} }} \\ \\ { \tt{ {x}^{2} + 6x + 9 = - 2 + 9}} \\ { \tt{ {(x + 3)}^{2} = 7}} \\ { \tt{x + 3 = \sqrt{7} }} \\ { \tt{x = - 3 \pm2.648}} \\ { \tt{x = ( - 3 \pm \sqrt{7} )}}[/tex]

Your phone is losing charge at a rate of 2%every 7 minutes. You check and see that you have 44% left. Write the function of total charge left where x is in minutes. Find the y-intercept, x-intercept and slope.

Answers

The y-intercept, x-intercept and slope are 100, 350 and 2 / 7, respectively.

How to describe the linear equation describing the discharge of a phone

In accordance with the statement, the phone charge decreases linearly in time based on the following linear model:

c(x) = 100 - (Δy / Δx) · x

Where:

c(t) - Current charge of the cell phone, in percentage.Δc - Current charge change, in percentage.Δx - Time change, in minutes.x - Time, in minutes.

If we know that Δy = 2, Δx = 7, then the linear equation is:

c(x) = 100 - (2 / 7) · x

Then, the y-intercept, x-intercept and slope are, respectively:

y-intercept

b = 100

x-intercept

0 = 100 - (2 / 7) · x

(2 / 7) · x = 100

2 · x = 700

x = 350

Slope

m = 2 / 7

The y-intercept, x-intercept and slope are 100, 350 and 2 / 7, respectively.

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when slolved please show steps.

Answers

The expression for h in the information illustrated will be h = 2r.

How to illustrate the information?

It should be noted that the expression is given as:

2πr³ = πr²h

In this situation, the information is that we should make h the subject of the formula.

This will be:

2πr³ = πr²h

Divide both side by πr²

2πr³/πr² = πr²h/πr²

2r = h

Therefore h = 2r

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find the value of each expression

16.2 + (-8.4) =

2/5 - 3/5 =

-9.2 - 7 =

(-4 3/8) - (-1 1/4) =

WILL GIVE OUT BRAINLIEST !

Answers

Answer:

1. 7.8

2. -1/5

3. -16.2

4. -25/8

Step-by-step explanation:

-

Answer:

7.8

-0.2

-16.2

-3.125

I really hope it helps

ps: from ultra instinct Giga Chad

Which expression has a value of -5?
A: (-3) -8
B: (-8) - (-3)
C:(-3) - (-8)
D: 8-(-3)

Answers

Answer is B: (-8) - (-3)

Reason

When subtracting a negative, we know two negatives become a positive

-8
+3
____
-5

Natalie works as a playground supervisor for 8 weeks during the summer at a rate of
$15.27/h. She works a 40-hour week but averages 3 hours of overtime each week,
paid at time and a half. How much will she earn each week, and for the whole
summer?

Answers

Natalie will be paid $656.61 for a week and for summer $10505.76.

What is an expression?

The mathematical expression is the combination of numerical variables and operations denoted by addition, subtraction, multiplication, and division signs.

Mathematical symbols can be used to represent numbers (constants), variables, operations, functions, brackets, punctuation, and grouping. They can also be used to denote the logical syntax's operation order and other properties.

Given that Natalie earns $15.27 per hour while working as a playground supervisor for 8 weeks throughout the summer. Although she works a 40-hour week, she typically puts in 3 hours of overtime.

For a week = ( 40 + 3 ) x 15.27 = $656.61

For a summer = 4 x 4 = 16 weeks

For a summer = 16 x $656.61 = $10505.76

Therefore, Natalie will be paid $656.61 for a week and for summer $10505.76.

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Write equations for the horizontal and vertical lines passing through the point (1,8)

Answers

Answer:

Vertical: x = 1

Horiz: y = 8

Step-by-step explanation:

The equation of a

vertical line is always:

x = anumber

The equation of a horizontal line is in the form:

y = anumber

In the question a point is given, the point (1,8) is in the form (x,y) So x is 1 and y is 8.

We can fill in this given information to complete the equations.

Vertical: x = 1

Horizontal: y = 8

The length of a bacterial cell is about 4 x 10−6 m, and the length of an amoeba cell is about 2.5 x 10−4 m. How many times smaller is the bacterial cell than the amoeba cell? Write the final answer in scientific notation with the correct number of significant digits.

6.25 x 102
2 x 102
6 x 101
16 x 101

Answers

the bacterial cell is 6.25*10 times smaller than the amoeba cell.

How many times smaller is the bacterial cell than the amoeba cell?

To find how many times smaller is the bacterial cell than the amoeba cell, we need to take the quotient between the amoeba cell's length and the  bacterial cell's length

We know that:

bacterial cell's length = 4*10^(-6) m

amoebas cell's length. = 2.5*10^(-4) m

The quotient gives:

Q = ( 2.5*10^(-4) m)/(4*10^(-6) m) = (2.5/4)*(10^(-4)*10^6) = 0.625*10^(-4 + 6)

Q = 0.625*10^2

Now we want this in scientific notation, so we need to have a digit in the left fo the decimal point, so we can rewrite this as:

Q = 0.625*10^2 = 6.25*10^1 = 6.25*10

Then the bacterial cell is 6.25*10 times smaller than the amoeba cell.

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m ebd = 29 bc bisects abd and be bisects cbd find m abc

Answers

We can conclude that in the question, angle m∠ABC = 58°.

What are angles?When two straight lines or rays intersect at a common endpoint, an angle is formed. An angle's vertex is the common point of contact. Angle is derived from the Latin word angulus, which means "corner." Angles in geometry are classified according to their measurement. Acute angle, Obtuse angle, Right angle, Straight angle, reflex angle, and full rotation are the names of basic angles.

So,

∠EBD is 29° and line EB bisects ∠CBD.

Then, ∠CBD = ∠CBE + ∠EBD∠CBD = 29 + 29 = 58°

Similarly, ∠CBD = 58° and line CB bisects ∠ABD

Then, ∠ABD = ∠ABC + ∠CBD ∠ABD = 58 + 58 = 116°

Hence, ∠ABC = 58° as ∠CBD is also 58° because common line BC bisects the angle ∠ABD.

Therefore, angle m ∠ABD = 58°.

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determine whether the following graph represents a function

1. one to one function
2. Not a function
3. Function, but not one to one

Answers

Answer:

3. function, but not one to one

Step-by-step explanation:

If you do a vertical line test anywhere you draw a vertical line will only hit in one spot

If you do a horizontal line test to check If the line is one to one it hits in multiple spots therefore the line that is graphed is a function but not one to one

please help!!!!!!!!!!!!!! show your work and try to have the right answer

Answers

Answer:

Step-by-step explanation:

Ana has 8 stamps. Together, Ricky and ana have 23 stamps. The equation 23 = r + 8 represents this situation,where r is the number of stamps Ricky has. Solve the equation to find the number of stamps ricky has

Answers

Ricky has the number of stamps in the number of 15 stamps.

According to the question, the given parameters can be used to form the expression by using simplification method and the parameters are as follows:

Stamps for Ana: 8

Stamps for Ricky and Ana: 23

Given equation: 23 = r + 8

The equation formed by the simplification method is:  r + a = 23

Solving above two equations, we get a = 8 stamps and r = 15 stamps.

Hence, Ricky has the number of stamps in the number of 15 stamps.

What is simplification?

The word simplification is the procedure in which complicated expression can be written in a simpler form to make the calculation easy. This method is used to calculated the answers for the unknown quantity.

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Use your results from Exercise 13 to determine whether the given measures define 0,1, 2, or infinitely many obtuse triangles. Justify your answers.
a=13, b=17, m

Answers

When two sides are provided without an angle measurement, such as a = 13m and b = 17m , we can create an infinite number of obtuse triangles.

As an example:

How many different obtuse triangles can we make if our side lengths are 13m and 17m, and our angle value ranges from 90 to 360 degrees?

Make a triangle with sides of 13m and 17m metres, a 120 degree angle, and a third side that can be protractored to the length you desire. You've constructed a triangle.

We may create a whole different triangle that is identical to this one by altering the third side's length and angle.

You must always remember to select the side lengths and angles. It's hinted that you could choose another course of action. There are an infinite amount of distinct triangles that can be created by using the same angles.

Thus, we can make an infinite number of triangles by employing a single angle and a single side length.

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Simplify the expression. Write your answers using integers or improper fractions.

− 3/2(1/2 n+2n−3)+4n

Answers

The expression is simplified to n - 16/ 4

What are algebraic expressions?

Algebraic expressions are expressions comprising of terms, variables, factors, constants and coefficients.

They are also made up of mathematical operations such as addition, subtraction, multiplication, division, bracket, etc.

Given the expression;

− 3/2(1/2 n+2n−3)+4n

Solve the variables in the bracket, we have;

- 3/ 2 {   n + 4n - 6 / 2} + 4n

-3/2 { 5n - 6/ 2 } + 4n

expand the bracket

- 15n - 18/ 4 + 4n

Fin the LCM

-15n - 16 + 16n  /4

n - 16/ 4

Thus, the expression is simplified to n - 16/ 4

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Caroline rewrote a quadratic equation in vertex form by completing the square, but her work has errors.
f(x)
-2x² + 12x15
-2(x² - 6x) — 15
-2(x² - 6x + 9) - 9 - 15
-2(x - 3)²9 - 15
-2(x - 3)² - 24
Identify the first error in her work.

Answers

The required error in Caroline's quadratic equation in vertex form by completing the square is -2(x² - 6x + 9) - 9 - 15 is should be -18 in place of -9.

Given that,
To figure out the error made by Caroline in the calculation of a quadratic equation in vertex form by completing the square.

His calculation,
= -2x² + 12x - 15

= -2(x² - 6x) — 15

= -2(x² - 6x + 9) - 9 - 15-2(x - 3)²9 - 15
= -2(x - 3)² - 24


Correct calculation,
= -2x² + 12x - 15
= -2(x² - 6x) - 15

= -2(x² - 6x + 9) - 18 - 15
= -2(x - 3)² - 18 - 15
= -2(x - 3)² - 33

Thus, the required error in Caroline's quadratic equation in vertex form by completing the square is -2(x² - 6x + 9) - 9 - 15 is should be -18 in place of -9.

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Determine whether each infinite geometric series diverges or converges.
If the series converges, state the sum. 4+2+1+ . . . .

Answers

Determine whether each infinite geometric series diverges or converges.

The series converges.

If the series converges, state the sum. 4+2+1+ . . .

The sum of the infinite series is 8

What is the sum of the infinite series?

Given:

[tex]a(\text{ the first term})=4\\\\r(\text{ the common ratio})= \frac{a_2}{a_1} = \frac{2}{4}=\frac{1}{2}[/tex]

Since , [tex]\vert r\vert < 1[/tex]  , the  infinite series converges.  

The sum of infinite geometric series is:

[tex]S_\infty=\frac{a}{1-r} ; -1 < r < 1\\\\S_\infty=\frac{4}{1-\frac{1}{2} } =\frac{4}{\frac{1}{2} }=8[/tex]

The sum of the infinite series is 8

What is an infinite geometric series?

The result of an endless geometric sequence is an infinite geometric series.There would be no conclusion to this series.The total of all finite geometric series can be determined.However, if the common ratio of an infinite geometric series is bigger than one, the terms in the sequence will grow steadily larger, and adding the larger numbers together will not yield a solution.

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Jared has completed a controlled scientific experiment in which he found a strong
positive correlation between hours of daylight and pea plant growth. He calculates that
the correlation coefficient is 0.93. Does Jared's experiment suggest that sunlight causes
pea plant growth? Why or why not?
OYes; if the correlation coefficient is close to 1, then there is a cause-and-effect relationship.
Yes; finding a strong correlation in a controlled scientific experiment suggests a cause-and-effect
relationship.
O No; cause-and-effect relationships always have a correlation coefficient of 1 or -1.
No; cause-and-effect relationships can be established only by collecting observations from
nature, not from a controlled experiment.

Answers

In Jared's experiment, we can conclude that; No, cause-and-effect relationships can be established only by collecting observations from

nature, not from a controlled experiment.

How to Interpret Correlation Coefficient?

The correlation coefficient is simply the specific measure that quantifies the strength of the linear relationship between two variables in a correlation analysis. It varies from -1 to 1.

Now, we are told that the correlation coefficient is 0.93. This means that it is close to 1. Now, we know that when the correlation coefficient is near 1 or −1, the linear relationship is strong; when it is near 0, the linear relationship is weak.

We also know that correlational studies allow researchers to detect the presence and strength of a relationship between variables, while experimental studies allow researchers to look for cause and effect relationships.

Thus, in Jared's experiment, we can conclude that; No, sunlight doesn't cause pea plant growth because  cause-and-effect relationships can be established only by collecting observations from

nature, not from a controlled experiment.

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From 125 yards away, a marksman hit 55.6 of the targets last year.

Answers

From 125 yards, a marksman hit 55.6 of the targets last year, which is equal to (55.6 × 100)% that is 5560%

What is percentage?

A percentage (from Latin: per centum, "by a hundred") is a number or ratio stated as a fraction of 100 in mathematics. The abbreviations "pct.", "pct.", and occasionally "pc" are also used to indicate it, while the percent symbol, "%," is most frequently employed. A percentage is a dimensionless (pure) number; it does not have a unit of measurement.

A percentage is a fraction or a ratio in which the full number is always 100. For example, if Sam received 30% on his arithmetic test, he received 30 points out of a possible 100. It is written as 30/100 in fraction form and 30:100 in ratio form.

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Full question

Rewrite the decimal in the sentence below as a percentage.

From 125 yards away, a marksman hit 55.6 of the targets last year.

Points that are on the same line are collinear. Use the definition of slope to determine whether the given points are collinear.Prove that the triangle with vertices (3,5),(-2,6) , and (1,3) is a right triangle.

Answers

Using the definition of slope, the triangle with vertices (3 , 5), (-2 , 6), and (1 , 3) is a right triangle.

The slope, m, determines the steepness of a line. It can be measured by the vertical distance from one point to another divided by the horizontal distance of the same points.

m = (y2 - y1)/(x2 - x1)

To prove that the triangle with vertices (3 , 5), (-2 , 6), and (1 , 3) is a right triangle, there should be a pair of adjacent lines perpendicular with each other(forms 90 degree angle). The slope of this pair of adjacent lines must be negative reciprocal of one another.

let A = (3 , 5)

B = (-2 , 6)

C = (1 , 3)

Determine the slope of each line of the triangle: AB, BC, AC.

AB : m = (6 - 5)/(-2 - 3) = 1/-5 = -1/5

BC : m = (3 - 6)/(1 - -2) = -3/3 = -1

AC : m = (3 - 5)/(1 - 3) = -2/-2 = 1

-1 is the negative reciprocal of 1. The slope of BC is the negative reciprocal of the slope of AC, hence, side BC is perpendicular with each other.

Therefore, the triangle with vertices (3 , 5), (-2 , 6), and (1 , 3) is a right triangle.

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