Refer to the graph below.
Work Step by Step
Recall: The graph of an equation of the form $y=k$ is a horizontal line that passes through the point $(0, k)$. All points on the line have a $y$-coordinate of $k$, and the graph has no $x$-intercept. Thus, the graph of the given line is a horizontal line that passes through $(0, -4.5)$. The graph has no $x$-axis. Refer to the graph above.