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Direct and Inverse Proportion
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What proportion means

What proportion means

The symbol y∝xy \propto xy∝x means yyy is proportional to xxx. In GCSE questions, you usually replace ∝\propto∝ with an equation using a constant kkk.

Direct and Inverse Proportion Lesson

  1. GCSE
  2. /Maths
  3. /Direct and Inverse Proportion

Step-by-step lessons on CCEA GCSE Maths Direct and Inverse Proportion. Each one builds up to exam-style questions. Build fluency with number, ratio and algebra first, since geometry, probability and statistics topics rely on them, and leave extra time nearer the exam for Higher-tier problem-solving and multi-step reasoning questions.