1.y=- 1/9(x？ 0? 5-8x-20)=- 1/9(x-4)？ 0? 5+4 because the iron ring is 3 meters above the ground, y=3. Substitute y=3 into the equation and get x=7. Because the shooting point is 7 meters away from the center of the hoop, the ball can be hit. 2. Substitute Y = 3. 19 into the equation to get X = 4 2.7 x 1 = 6.7 x2 = 3.3.