The graph of y=f(x) is shown in red below. For how many values of c is f(c) = -1?
+37152 Everywhere the red line below crosses the graph is where f(c) = -1 ( this is the same as y = -1) How many do you see?
+37152 Everywhere the red line below crosses the graph is where f(c) = -1 ( this is the same as y = -1) How many do you see?
