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If the point (2,9) is on the graph of y=f(x), then there is one point which must be on the graph of y=f(-x). What is the sum of that point's coordinates?

 Jul 19, 2020
 #1
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The point that must be on the graph of y = f(-x) is (2,-9), and so the answer is -7.

 Jul 19, 2020

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