Appendix B - Graphing Utilities - B.5 Square Screens - B.5 Exercises - Page B8: 1

Yes.

We know that for a rectangle to result in a square screen, $\frac{X_{max}-X_{min}}{Y_{max}-Y_{min}}=\frac{3}{2}$ must be true. Here: $\frac{X_{max}-X_{min}}{Y_{max}-Y_{min}}=\frac{3-(-3)}{2-(-2)}=\frac{6}{4}=\frac{3}{2}$. Thus it is a square screen.