Question

Let c be any constant number. Which of the following will always be perpendicular to −4x + y = −2?

A) y = 4x + c
B) y = -4x + c
C) y = -1/4x + c
D) y= 1/4x + c

Answer 1

and two lines are perpendicular when slop1*slope2=-1
so try this urself first