The graph of a quadratic function contains the points (1, 9), (0, 0), and (–1, 9). shawn thinks the function f(x) = x2 was vertically stretched by a factor of 9. brielle thinks the function f(x) = x2 was horizontally shrunk by a factor of 3. determine who is correct and explain why

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.

this is the correct answer, the other person is incorrect. (edunuity)

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