Question

Ryan throws a tennis ball straight up into the air. The ball reaches its maximum height at 2 seconds. The approximate height of the ball x seconds after being thrown is shown in the table. Which equation models the motion of the ball?

Answer 1

y=-16(x-2)^2+68

Explanation:

y=-17×(x-4)

4=-17(0)(0-4)

4+-0

y=-16(x)(x-4)

4=-16(0)(0-4)

4+-0

y=-16(x-2)^2+68

4=-16(0-2)^2+68

4=-16(4)+68

4=-64+68

4=4

y=-16(x-2)^2+68