Question

Which pair of equations represents perpendicular lines?

a. y=2x-7, y=-0.5x-7
b. y=2x+7, y=2x-7
c. y=2x+7, y=x+7
d. y=2x+7, y=-2x-2

Answer 1

the answer would be A because if you graph those equations they are perpindicular. They cross eachother like a t

Answer 2

Perpendicular lines have a slope that is = to the negative reciprocal.

So a slope of 2 and the other would be -1/2 so
A)