Question

How do you find the equation of a line that Contains (5, 1) and is perpendicular to y=3?

Answer 1

This is actually a pretty simple problem to solve once you sketch a picture ...

Explanation:

First, the line `y=3` is a line that is horizontal and parallel to the x-axis (see sketch).

Next, the line perpendicular must also be parallel to the y-axis.

Answer: `x=5`

hope that helped