1a) Calculate the first and second differences for the table below. First Difference Second Difference b) Is the relation linear or quadratic? c) Explain your results in part b. [,1] 2. Looking at just the equation, state whether the following are linear or quadratic functions. Explain. a) y=x+7 b)y=-4x2+4 This is . This is Linear or Quadratic Linear or Quadratic Reason: Reason: /7 marks