13 This graph represents the height of a float plane above a lake as the plane descends to land h 800 E 600 Height m 400 200 0 h f t 00 4 6 8 Time min 10 a Determine the slope and the h intercept What do they represent b Write an equation to describe the graph then verify the equation c Use the equation to calculate the value of h when t 5 5 min d Suppose the plane began its descent at 700 m and it landed after 8 min i How would the graph change