Ratio & ProportionHigh Exam FrequencyAQAEdexcelOCRWJEC

Inverse Proportion

Revise Inverse Proportion in Ratio & Proportion for GCSE Mathematics with 15 exam-style questions and 10 flashcards. This is a high-frequency exam topic, so students should expect to explain it clearly under timed conditions.

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The Opposite of Direct

Introduction 2

Key Features of Inverse Proportion

Key Facts 3

Method: Solving Inverse Problems

Deep Dive 4

Worked Example

Notes 5

Common Mistakes

Exam Tips 6

Knowledge Organiser: Inverse Proportion

Summary

Sample Flashcards

What shape is the graph of y = k/x?

A hyperbola — a curved line that never touches either axis. For k > 0, the curve is in the 1st and 3rd quadrants.

What is the formula for inverse proportion?

y = k/x, where k is the constant of proportionality. The product xy is always constant.

Exam questions for Inverse Proportion

Which of the following correctly reads the mathematical statement y ∝ 1/x?

A. y is directly proportional to x
B. y is inversely proportional to x
C. y equals 1 divided by x
D. y is greater than x

1 markfoundation

Explain what it means for y to be inversely proportional to x. Your answer should refer to the equation and the graph.

2 marksstandard

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Proportion Graphs