x

What proportion means

In proportion questions, two variables are linked by a fixed number called the constant of proportionality, usually $k$ . Your first job is to turn the words into an equation.

Direct and Inverse Proportion Lesson

IGCSE
Maths
Direct and Inverse Proportion

Step-by-step lessons covering CIE IGCSE Maths Direct and Inverse Proportion for Core and Extended tier. Each lesson works through exam-style questions in Paper 1 and Paper 3 (Core) or Paper 2 and Paper 4 (Extended) format. Start with the Core-tier fundamentals in number and algebra before moving on to the more demanding Extended-only topics like calculus-adjacent algebra and advanced trigonometry.

Lessons

x

What proportion means

In proportion questions, two variables are linked by a fixed number called the constant of proportionality, usually $k$ . Your first job is to turn the words into an equation.

Direct and Inverse Proportion Lesson

IGCSE
Maths
Direct and Inverse Proportion

Step-by-step lessons covering CIE IGCSE Maths Direct and Inverse Proportion for Core and Extended tier. Each lesson works through exam-style questions in Paper 1 and Paper 3 (Core) or Paper 2 and Paper 4 (Extended) format. Start with the Core-tier fundamentals in number and algebra before moving on to the more demanding Extended-only topics like calculus-adjacent algebra and advanced trigonometry.