Learning Task 2. Which of the following represents a quadratic function? 1. f(x) = 8x + 5 2. f(x) = x2 - 2x + 7 х -5 4 3 -2 . 3. -1 3 y=f(x) 3 0 -1 lo X 1 2 3 4 5 4. y=f(x) 0 1 2 3 4 PIVOT 4A CALABARZON