Answer
See graph.
Domain: $\{-4\}$
Range: $(-\infty,\infty)$
Work Step by Step
We graph $x=-4$ by recognizing that it represents a vertical line through the point $(-4,0)$. See graph for result.
Since the graph is a vertical line, we know that the domain is restricted to $-4$, while the range is all real numbers:
Domain: $\{-4\}$
Range: $(-\infty,\infty)$