1. Question 48
    was: Differentiation - Slope - Choose your own curve
    now: Differentiation - Slope - Gradients of polynomials including rationals
  2. Question 132
    was: Algebra and Functions - Quadratic curves - Curve recognition 2
    now: Algebra and Functions - Quadratic curves - Matching factors of quadratic curves
  3. Question 1030
    was: Algebra and Functions - More on curves - Various curves
    now: Algebra and Functions - More on curves - Matching polynomial curves
  4. Question 135
    Algebra and Functions - Quadratic Curves - Solving Problems
  5. Question 158
    Algebra and Functions - Simultaneous Equations - Linear and Quadratic 2
  6. Question 160
    Algebra and Functions - Simultaneous Equations - Two Quadratics
  7. Question 180
    Algebra and Functions - XTRA - XTRA 1