# How do you graph x=7?

A vertical line where $x = 7$
The line $x = 7$ is a vertical line which crosses the $x$-axis at $7$
Vertical lines cannot be written in the usual way of $y = m x + c$ because the slope is infinite and the $y$- values have no effect on the line at all.
Any value of $y$ will have the same $x$-value of $7$