Question: If (4, 2) is a point on the graph of y = f(x), which of the following points must be on the graph of y

If (4, 2) is a point on the graph of y = f(x), which of the following points must be on the graph of y = f(2x)?

(a) (4, 1)

(b) (8, 2)

(c) (2, 2)

(d) (4, 4)

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