Mathematics 0580 · IGCSE · Ratio and proportion

Ratio and proportion — practice question

$y$ is inversely proportional to $x^2$. If $x = 5$, then $y = 16$.
(main)[3]

Determine $y$ when $x = 10$.

Worked solution & mark scheme

This 3-mark question has a full step-by-step worked solution and mark scheme. One marking point: “Sound inverse-square working” …

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