Mathematics 0580 · IGCSE · Proportion

Proportion — practice question

The quantity $w$ varies as the square root of $y$, and $y$ varies inversely with $x$. If $x = 4$, then $y = 16$ and $w = 8$.
(main)[3]

Find $w$ as a function of $x$.

Worked solution & mark scheme

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

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