Mathematics 0580 · IGCSE · Ratio and proportion

Ratio and proportion — practice question

As $y$ varies inversely with $\sqrt{x + 2}$, the pair of values given is $x = 2$ and $y = 3$.
(main)[2]

Express $y$ in terms of $x$.

Worked solution & mark scheme

This 2-mark question has a full step-by-step worked solution and mark scheme. One marking point: “Assume $y=\dfrac{k}{\sqrt{x+2}}$” …

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