Question

If the point (2,-1)lies on the graph of y=f(x), then a point on the graph of y=f(2x) would be

Answer 1

(1, -1)

Explanation:

Since f(2x) is a horizontal compression by factor of 1/2, you multiply the x value of the coordinate by 1/2, so (2, -1) -> (1, -1)