Substitute $0$ for $y$ and solve to find the x-intercepts.

Substitute $0$ for $x$ to find the y-intercept.

Start to sketch the graph by locating the $x$-intercepts and use the location of the $x$-intercepts to figure out where the axis of symmetry must be.

The y-intercept is $\left(0, 8\right)$, the x-intercepts are $\left(−2, 0\right)$ and $\left(−4, 0\right)$, and the line of symmetry is $x = −3$.