Answer
square screen.
Work Step by Step
Based on the given data, we can find the range in X-direction $\Delta X=X_{max}-X_{min}=9-(-0)=9$, the range in Y-direction $\Delta Y=Y_{max}-Y_{min}=4-(-2)=6$. As $\frac{\Delta X}{\Delta Y}=\frac{9}{6}=\frac{3}{2}$, the viewing rectangle is a square screen.
