The Maths Habit

Direct proportion: y = kx

Proportion · Higher · 5:21

Worksheet (PDF) Answers (PDF)

Chapters

  1. 0:00Introduction
  2. 0:17Do Now
  3. 0:58What direct proportion means
  4. 1:25From proportional to y = kx
  5. 1:55Example 1: find k, then y
  6. 2:31Example 2: using the formula backwards
  7. 3:25Your turn
  8. 3:57Common mistake
  9. 4:31Worksheet and exit question

Practise direct proportion for 15 minutes a day in The Maths Habit, on your phone or in your browser.

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