Matching quadratic functions to their graphs.
Three math problems showing quadratic functions and their corresponding graphs. Problem 7: f(x) = -(x + 1)² with a downward parabola vertex at (-1, 0). Problem 8: f(x) = -(x + 3)² with a downward parabola vertex at (-3, 0). Problem 9: f(x) = (x - 3)² with an upward parabola vertex at (3, 0).