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10 votes
10 votes
Find an equation for the line below. (-4,-2) (5,4)

User Arnold Parge
by
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1 Answer

17 votes
17 votes

Answer:

y = 2/3x + 2/3

point-slope form: y - 4 = 2/3x - 10/3

Explanation:

1. Find the slope; (change in the y-values)/(change in the x-values)

slope (m) = [4 - (-2)] / [5 - (-4)]

m = 6/9 = 2/3

2. Find "b" by using the slope and one of the given points and substitute into

y = mx + b

4 = 2/3(5) + b

4 = 10/3 + b

4 - 10/3 = b

2/3 = b

y = 2/3x + 2/3

use the point slope form
y _ -y_(1) = m(x-x_(1) ) y - 4 = 2/3(x - 5)

y - 4 = 2/3x - 10/3

User Markus R
by
2.9k points