Question

1) Which line is perpendicular
to y = 4x+5?

Answer 1

B

Explanation:

The given line is a slope -intercept form

y = mx + b m is the slope

for this line slope = 4

PERPENDICULAR slope is - 1/m = = - 1/4 <====you just have to LEARN this!

Answer B has slope = - 1/4

Answer 2

`B. y=-1/4x+6.`

Explanation:

The line perpendicular to the line y = 4x + 5 would need a slope of -1/4.

The slope of any perpendicular line multiplied by the original line must equal -1. Therefore, only answer B works.