Which line is perpendicular to the line y=-3x+2

Question

A. 3x+y=4

B. x+3y=24

C. 3x-y=5

D. x-3y=3

Answer 1

slope of line y = -3x +2 is -3

perpendicular line must have slope = 1/3

so find slope of every option by converting it into slope intercept form

for example slope of line of option a is

3x+y =4

y =-3x+4

so slope is -3

so a is not perpendicular line.

try all option and find your answer