er Activity: Using the equal differences method, determine which of the following ordered pairs represent a quadratic function. Justify your answer. -3 -2. - 1 0 1 2. 1. {(-1, 11), (0, 6), (1, 3), (2, 2), (3, 3), (4, 6), (5, 11)} У 56 37 30 29 28 х 4. 4 Х 3. {(-3, -35), (-2, -16), (-1,-9), (0, 0), (1, -7), (2, 0), (3, 19) 4 39 -2. 24 Olo 2 -6 9 -21 у​