## Algebra 2 Common Core

Graph of $x+3=0$
Using the properties of equality, the given equation, $x+3=0 ,$ is equivalent to \begin{align*} x+3-3&=0-3 \\ x&=-3 .\end{align*} The graph of $x=a$ is a vertical line passing through $(a,0).$ Hence, the graph of the equation above is a vertical line passing through $(-3,0)$.