Decoding the downward curve: what is inverse proportionality?
In short: Master a fundamental mathematical concept essential for GCSE Foundation success. This video explains how to identify, graph, and calculate relationships where one variable changes in opposition to another.
The video breaks down the mechanics of inverse proportionality, focusing on how to recognise the characteristic downward-sloping curve on a graph. It covers the algebraic side of the relationship, teaching you how to use the proportionality symbol and how to form equations using the constant of proportionality, k.
Beyond theory, the lesson demonstrates how to use these equations to solve for unknown values and how to interpret specific points on a graph within a real-world context. This content is designed for students studying GCSE Maths Foundation.
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Sources
- Summary by Intellect · source: GCSE Maths - What Does Inversely Proportional Mean? (2026/27 exams)
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