Question

Which of the following lines is perpendicular to the line with this equation ?

y =4/5X – 12

a. y= -4/5x +9
b. y=5/4x +4
c. y= -5/4x -15
d.y= 4/5x -5

Answer 1

C: y = -5/4x - 15

Explanation:

A perpendicular line is always the negative reciprocal of the slope. In this case, the slope is 4/5. Therefore, the negative reciprocal is -5/4. Only look at the numbers connected to X for the slope, do not look at the constant.

Answer 2

soln,

a

y=5/4×-15