You throw a ball straight up from a rooftop. The ball misses the rooftop on its way down and eventually strikes the ground. A mathematical model can be used to describe the relationship for the ball's height above the ground, y, after x seconds. x, seconds after the ball is thrown y, ball's height, in feet, above the ground 1 359 3 281 4 194 a. Find the quadratic function y = ax + bx + c whose graph passes through the given points. y=