Mathematics, 11.10.2019 23:20 taytay210

Helena wrote the equation using point-slope form for the line that passes through the points (5, 1) and (3, 5). analyze the steps of her work using the point-slope form to write the equation. equation in which step did helena make an error? in step 1, she substituted the x values for y and the y values for x. in step 2, she didn’t use an x and y from the same coordinate pair. in step 3, she solved for the wrong variable. helena did not make an error.

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Answer from: therinzler1825

In step 2, she didn’t use an x and y from the same coordinate pair

Step-by-step explanation:

see the attached figure to better understand the problem

we have the points (5, 1) and (3, 5)

step 1

Find the slope

The formula to calculate the slope between two points is equal to

$m=\frac{y2-y1}{x2-x1}$

substitute

$m=\frac{5-1}{3-5}$

$m=\frac{4}{-2}$

m=-2

step 2

The equation of the line in point slope form is

y-y1=m(x-x1)

take the point (3,5)

m=-2

substitute

y-5=-2(x-3)

y-5=-2x+6

y=-2x+6+5

step 3

y=-2x+11

therefore

In step 2, she didn’t use an x and y from the same coordinate pair

Helena wrote the equation using point-slope form for the line that passes through the points (5, 1)

Answer from: Quest

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(continued on page 79)

step-by-step explanation:

Answer from: Quest

x= 149. 24+7=31. 180-31=149

your welcome

What is the value of x? enter your answer in the box. x =

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