Refer to the graph below.
Work Step by Step
The graph of $-3 \le 3 x \le 3$ is the region between the vertical lines $x=-3$ and $x=3$, including the lines themselves. The graph of $-1\le y \le 1$ is the region between the horizontal lines $y=-1$ and $y=1$. Thus, the region represented by the given set is the rectangle bounded by and including the lines $x=-3, x=3, y=-1, y=1$. Refer to the attached image in the answer part above for the graph.