Question

A ball is thrown across a playing field from a height of h = 6 ft above the ground at an angle of 45° to the horizontal at the speed of 20 ft/s. It can be deduced from physical principles that the path of the ball is modeled by the function
y = −
32
(20)2
x2 + x + 6
where x is the distance in feet that the ball has traveled horizontally.