SOLUTION: The graph of y=f(x) is shown in red below. For how many values of c is f(c) = -1? https://latex.artofproblemsolving.com/7/4/5/745692871d4963aedcef20352e362e9107ab1ec0.png (As

Question 1165506: The graph of y=f(x) is shown in red below. For how many values of c is f(c) = -1?
https://latex.artofproblemsolving.com/7/4/5/745692871d4963aedcef20352e362e9107ab1ec0.png
(Assume grid lines are spaced 1 unit apart.)
Answer by Edwin McCravy(20060) (Show Source): You can put this solution on YOUR website!



Draw the horizontal line y = -1, then each value of x where it intersects the
curve will be a value of c where f(c) = -1. I'll draw it in green, and circle
the points where f(c) = -1

 

I count 4 values of x = c where f(x) = f(c) = -1.  How many do you count?

Edwin

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