Chapter 6 - Systems of Equations and Inequalities - 6-1 Solving Systems by Graphing - Practice and Problem-Solving Exercises - Page 364: 32

He needs a wider view, and the solution is (-4,7).

Since we can see that the slopes are different, they must intersect. However, you can't see this on his graph, so we need to widen it out. Graphing it again, we see (-4,7) is where they intersect.