The graph of which of the following will be perpendicular to the graph of y = 2x – 4?
a.2x y = 4
b.4x – 2y = 4
c. y = –2x 8
d.2x 4y = 1

Perpencicular has slope that multiplies to -1
y=mx+b
m=slope
also
ax+by=c
-a/b=slope

y=2x-4
slope=2
2 times -1/2=-1
what has slope of -1/2

A. .2x+1y=4, -2/1=-2, no
B. 4x-2y=4, -4/2=-2, no
C. y=-2x+8, -2, no
D. 2x+4y=1, -2/4=-1/2, yes

D is answer

r   = 2.65m

good luck!

cutie~