Mathematics 0580 · IGCSE · Ratio and proportion

Ratio and proportion — practice question

y varies directly with the square root of x. If $x = 9$, then $y = 6$.
(main)[3]

Determine $y$ for $x = 25$.

Worked solution & mark scheme

This 3-mark question has a full step-by-step worked solution and mark scheme. One marking point: “$y = k\sqrt{x}$” …

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