Both Shawn and Brielle are correct. The function that represents a vertical stretch by a factor of 9 is f(x) = 9x2. The function that represents a horizontal shrink by a factor of 3 is
f(x) = (3x)2, which is equal to f(x) = 9x2.
Additionally, if you wanted to verify that the given points are on the graph of both functions, you could substitute them into the functions to get true statements.
