Question

Two lines are perpendicular. The equation of the first line is y=4x+1 which of the following cannot be the equation of the second line

A) y=-1/4x-2
B) x-4y=-2
C) x+4y=2
D) 8y=-2x-5

Answer 1

A) is ok; its slope is the neg. reciprocal of the given slope 4, as is required for

perpendicular lines.

B) not feasible; its slope is +1/4, not the negative reciprocal of 4 (-1/4).

C) OK

D) OK (slope is -1/4)