9) Consider the displacement-time graph shown below, where displacement is measured in metres and time is measured in seconds. DISPLACEMENT-TIME GRAPH VELOCITY-TIME GRAPH 120 Displacement [m) 100 Time seconds 2 10 a) Determine the average velocity in the first 5 seconds. (A -2 marks) b) Determine the instantaneous velocity at 4 seconds. (A -2 marks) c) Draw a clearly labeled corresponding velocity-time graph on the provided axes. (A - 3 marks)PART TWO - Full Solution 6) Determine, to the nearest tenth, the instantaneous rate of change of the function f(x) =2x3-5x' -4 where x= -2.5. (K -5 marks)