b) y: 4/x2 +3): c) f(x) : (2x 1)"(4x + 3)5 Communication (10 marks) 3. The following graph represents the position of an object moving in a straight line. > Complete the following table describing the velocity and acceleration at each point. Fill in each square with either positive (+), negative (-) or zero (0). Paint Velocity Acceleration 4. My son Spencer says: \"The derivative of a cubic polynomial function is a quadratic function.'I Is this statement always true, sometimes true, or never true? Defend your choice in words and provide 2 examples to support your