The height y, in feet, of a football x seconds after it is thrown is modeled by the equation y=-16x2 + 24x + 1. Wha information does the zero of the equation 6=-16x2 + 24x + 1 represent? O the height of the ball after 6 seconds O when the ball is 6 ft above the ground the initial upward velocity of the ball Othe horizontal distance traveled by the ball when it is 6 ft above the ground