Question

write an equation of the line that passes through (-5,8) and (-3,-8)

Answer 1

slope = [8-(-8)]/[-5-(-3)]
=16/-2
= -8

y=mx+b
8=-8(-5)+b
8=40+b
b=-32

y=-8x-32

Answer 2

\[m=\frac{y1-y2}{x1-x2}=\frac{8+8}{-5+3}=-8\]