look at this graph: write the equation of the line.

Explanation:

Step1: Identify line - type

The line is a vertical line.

Step2: Recall vertical - line equation form

The equation of a vertical line is of the form $x = a$, where $a$ is the $x$ - coordinate of any point on the line.

Step3: Determine the $x$ - value

The line passes through the point where $x=-2$. So the equation of the line is $x=-2$.

Answer:

$x = - 2$