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What proportion means

What proportion means

Proportion compares quantities that change together in a multiplicative way. If one quantity is multiplied by a factor, the other follows a predictable rule too.

Direct and Inverse Proportion Lesson

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

Step-by-step lessons covering Edexcel IGCSE Maths Direct and Inverse Proportion for IGCSE Maths. Each lesson works through exam-style questions in Paper 1 and Paper 2 format. Build confidence with the shared Foundation-tier content first, since roughly 40% of Higher-tier marks are targeted at the grades 4–5 boundary that both tiers have in common.

Lessons

Recurring Decimals to FractionsFractional and Negative IndicesDirect and Inverse ProportionExpanding Triple BracketsSolving Simultaneous Equations GraphicallyGradient of a LineEquation of a LineSpheres and ConesSector Areas and Arc LengthsParallel and Perpendicular LinesSimilar Shapes (Area and Volume)Circle TheoremsCumulative FrequencyProbability Trees