Well, you're looking for the number of values of x that would make y equal to -1. Looking at the graph, we see that there are 4 places where the function touches the horizontal line at -1. So 4 should be the answer.

Well, you're looking for the number of values of x that would make y equal to -1. Looking at the graph, we see that there are 4 places where the function touches the horizontal line at -1. So 4 should be the answer.