# How do you graph the lines using slope-intercept form x= -2?

Feb 10, 2016

The slope for $\left(x = - 2\right)$ is undefined and as such you can not really use the slope-intercept form.

#### Explanation:

The slope-intercept form is
$\textcolor{w h i t e}{\text{XXX}} y = m x + b$ for a line with slope $m$ and y-intercept $b$

No such equation exists that is equivalent to $x = - 2$.

$x = - 2$ is a vertical line passing through the X-axis at $\left(- 2\right)$
It has an undefined (infinite) slope and does not cross the Y-axis (there is no y-intercept).