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Exam-style practice

Proportion answer explanations

Review worked answers and explanations for Proportion. Aligned to Cambridge IGCSE Mathematics.

Answer explanations

Question 1 of 2

Review the answer support, then move sideways through the set.

Paper 2 structured question: Proportion

Paper 2Core or Extended Mathematics3 marks

Description

Direct Proportion Example

A quantity y is directly proportional to the square of x. When x = 4, y = 32.

  1. a

    Calculate the constant of proportionality k in the equation y = kx^2.

    [3]