Question

How do you write an equation in standard form given a line that passes through (-2,2) , perpendicular to y=4?

Answer 1

`x=-2`

Explanation:

This line `y=4` is horizontal. Any line perpendicular to it will be vertical, having a fixed value of `x`, so will be of the form `x=k` for some constant `k`.

If the line passes through `(-2, 2)` then that point must satisfy the equation of the line. Hence `k=-2`.