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HigherNon-calculatorS6 Scatter graphs

Question 1 · 3 marks

Spec and skills
  • Paper scope: Paper 1: non-calculator practice
  • Spec S6
  • Spec R14
  • Original practice question
  • Answer and supported method checks
For a sample of cars, the line of best fit for yy, the stopping distance in metres, against xx, the speed in m/s, is y=3.2x−15y = 3.2x - 15 for speeds from 10 m/s to 30 m/s.
(a)
Interpret the gradient 3.2 in this context.
1 mark

Say your answer out loud or jot it down, then compare.