Both Shawn and Brielle are correct. The function that represents a vertical stretch by a factor of 9 is f(x)=9×2.The function that represents a horizontal shrink by a factor of 3 is: f(x)=(3x)2, which is equal to f(x)=9×2.
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.
