You throw a ball straight up from a rooftop x, seconds after y, ball's height, in The ball misses the rooftop on its way down the ball is feet, above the and eventually strikes the ground. A thrown ground mathematical model can be used to describe 394 the relationship for the ball's height above the 386 ground, y, after x seconds. 334 a. Find the quadratic function y = ax- + bx + c whose graph passes through the given points