Question

How do you find the slope perpendicular to `y = 2`?

Answer 1

See a solution explanation below:

Explanation:

The equation `y = 2` defines a horizontal line where for each and every value of `x`; `y` has the same value; `2`.

By definition, the slope of a horizontal line is `0`.

Any line perpendicular to a horizontal line is a vertical line.

By definition the slope of a vertical line is undefined.