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MATH / 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? · Discussion

Discussing 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? · MATH

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