Question

What is the slope of the line perpendicular to `y=-4/15x+15`?

Answer 1

Perpendicular lines have a slope equal to the negative reciprocal ...

Explanation:

The slope of the given line is `m=-4/15`

The negative reciprocal: `m'=-(-15/4)=15/4`

So, the slope of the perpendicular line is `15/4`

Hope that helps