Solving Quadratic Equations Graphically - Item 52157 Keegan uses a slingshot to fire a rock from the top of a cliff. The equation -9.8t2 + 14.762t + 9.54 12 can be solved to find the time that it will take for the rock to reach a height of 12 meters above the ground. The graph shows the points of intersection of y = -9.8t² + 14. 762t +9.54 and y = 12. What does the graph tell you about the length of time it takes for the rock to reach a height of 12 meters? The rock will reach a height of 12 meters at about 0.8 seconds. D Height Above Ground (m) 14 10 The rock will reach a height second and again at about ​