x

Scaling and the two main patterns

Scaling and the two main patterns

Proportion describes how two quantities change together. A unit rate is the amount for 1 unit, such as cost per apple or cartons per hour, and it often helps you spot the relationship.

Direct and Inverse Proportion Lesson

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

Step-by-step lessons covering Edexcel GCSE Maths Direct and Inverse Proportion for Foundation and Higher tier. Each lesson works through exam-style questions in Paper 1, Paper 2 and Paper 3 format. 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.

Lessons

Writing a Ratio as a Fraction or Linear FunctionDirect and Inverse ProportionReverse PercentagesStandard FormSpeed and DensityChanging the Subject of a FormulaExpanding and Factorising QuadraticsSolving QuadraticsDrawing Quadratic GraphsSimultaneous EquationsSolving Simultaneous Equations GraphicallyGradient of a LineEquation of a LineSpheres and ConesSector Areas and Arc LengthsSimilar Shapes (Lengths)Exact trig valuesProbability TreesVenn Diagrams