Question

Write the equation in the form y = mx + b, of any line that is perpendicular to the line y = 5x + 4.

Answer 1

y= -1/5x +4

Explanation:

To find a perpendicular line, you need the negative reciprocal of the slope, in this case it is 5 and -1/5.

Answer 2

y = -1/5x - 2

Explanation:

All you need is a perpendicular slope and any y-intercept.

Perpendicular slope is a negative reciprocal so:

5 → -1/5

y-intercept doesn't matter so:

y = -1/5x - 2