Appendix B - Graphing Utilities - B.1 The Viewing Rectangle - B.1 Assess Your Understanding - Page B3: 10

$X[-22,-10,2]$ by $Y[4,8,1]$

Based on the given graph, we can identify the viewing window as $X[-22,-10,2]$ by $Y[4,8,1]$ where the first number in the bracket represents the minimum value, the second number the maximum value, and the last number the scale.