#### Answer

Refer to the image below for the graph.

#### Work Step by Step

RECALL:
(1) The graph of $x=h$ where $h$ is a constant is a vertical line whose x-intercept is $h$.
(2) The graph of $y=k$ where $k$ is a constant is a horizontal line whose y-intercept is $k$.
Thus, the given equation is a horizontal line whose y-intercept is 4.