Question

Find the point-slope equation for

the line that passes through the
points (1, -9) and (-10, 101). Use
the first point in your equation.

Answer 1

y - (-9) = -10 (x - 1)

Explanation:

y = mx + b

m (slope) = (y'-y) / (x'-x) = (101 - (-9)) / (-10) - 1) = 110/(-11) = -10

pass (1 , -9)

m = (y - (-9)) / (x - 1) = -10

y - (-9) = -10 (x - 1)