Question

What is the equation of the line perpendicular to `y=-2` that passes through `(4,-1)`?

Answer 1

`x = 4`

Explanation:

The graph of `y = -2` is a horizontal line, with a slope of `0`. The equation of the line that is perpendicular to it, has an undefined slope, and goes through the point `(4,-1)` is `x = 4`