Appendix D - D - Viewing Window and Interpreting Window Settings - Exercise Set - Page 689: 18

Xmin: -100 Xmax: 100 Xscl: 10 Ymin: -20 Ymax: 20 Yscl: 2

Since Xscl=10, and there are ten marks between zero and the maximum x-value, and zero and the minimum x-value, 10(10)=100. Therefore, Xmax =100 and Xmin = -100. Since Yscl=2, and there are ten marks between zero and the maximum y-value, and zero and the minimum y-value, 10(2)=20. Therefore, Ymax=20 and Ymin=-20.