Two quantities are in direct proportion when they increase or decrease by the [ ].
same multiplier
same amount
reciprocal multiplier
same difference
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.