Question

Which of the following pairs of lines are perpendicular? Select all that apply

A. y = 2x + 5 and y = -2x + 5
B. y = -4x + 5 and y = 1/4x + 5
C. y = 2 and y = -2
D. y = x + 4 and y = -x + 4
E. y = -3 and x = -3
F. y = 2/5x + 5 and y = 5/2x - 2

Answer 1

b d e

Explanation:

Answer 2

perpendicular lines will have negative reciprocal slopes

B. y = -4x+ 5 and y = 1/4x + 4
D. y = x + 4 and y = -x + 4
E. y = -3 and x = -3