A WNBA player takes a three-point shot 22 feet away from the center of the basketball hoop. The
ball reaches its highest point, 16 feet above the
floor, when it is 12 feet (horizontal distance) away
from the player. The ball is 13.6 feet above the floor
when it is 18 feet away from the player.

What does x represent in this problem? What does y represent in this problem?