Two quantities are in direct proportion when they increase or decrease by the [ ].
Two quantities are in direct proportion when they increase or decrease by the same multiplier.
Flashcards for Edexcel GCSE Maths Proportion, covering the key formulae, methods and definitions you need to recall for Paper 1, Paper 2 and Paper 3. 22 cards, matched to the Edexcel GCSE Maths (1MA1) specification.