Question

How do you write an equation that contains points (-2, -7) and is parallel to x=4?

Answer 1

`x=-2`

Explanation:

`x=4` is a vertical line; so any line parallel to it must be a parallel line; that is it must be of the form `x=c` for some constant `c`

If the required line goes through `(x,y)=(-2,-7)` then `x=-2` at that point and therefore must be equal to `-2` for all points (to be a vertical line).