Question

How do you find an equation parallel to x=7 and passing through (4,- 7)?

Answer 1

`x=4`

Explanation:

`x=7` is a vertical line
Any line parallel to `x=8` must also be a vertical line.
That is any line parallel to `x=7` must be of the form `x` '"some constant".
If such a line passes through `(x,y)=(4,7)`
then `x=4`