Question

Which of the following is perpendiclasr to the line y=-3x+7?
A) y= 1/-3x+7
B) y=7x-3
C) y= 1/3 x+5
D) y= -1/3 x +7
E) y+ 3x-7

Answer 1

C
slope of parallel lines:
m1 x m2 = -1