The answer is -2x + 4y + 5 (C)
Perpendicular means that the slopes are negartive inverses, aka
slope1 times slope2=-1
y=mx+b
slope=m
y=-1/2x-2
slope=-1/2
we need to find negative inverse
-1/2 times what=-1
answer is 2
y=2x+b
input the point (2,-2) to find b
(x,y)
(2,-2)
-2=2(2)+b
-2=4+b
minus 4 from both sides
-6=b
y=2x-6
the equtaion is y=2x-6
X, y, z denote children's movies, western movies, and horror movies, respectively. The related system of equations is formed and solved.

Simplifying the system of equations, we have



The video store has 500 children's movies, 600 westerns and 900 horror movies.