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Write an equation of the line in slope-intercept form: A(-1,3) and b(2,-1)

1 Answer

7 votes

Answer: y =
(-4)/(3)x +
(5)/(3)

Explanation:

First we will find the slope, then we will find the y-intercept.

Slope is change in y over change in x:


(-1-3)/(2--1)=(-4)/(3)

Now we will solve for the y-intercept:

y =
(-4)/(3)x + b

(-1) =
(-4)/(3)(2) + b

-1 =
(-8)/(3) + b


(5)/(3) = b

b =
(5)/(3)

Final equation:

y =
(-4)/(3)x +
(5)/(3)

User Diogenis Siganos
by
7.8k points

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