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Find the value of $y$ when $x=10$.
Mathematics 4024 · O Level · Ratio and proportion
Ratio and proportion — practice question
The quantity $y$ is directly proportional to the square of $x$. It is given that $y=\frac{1}{5}$ when $x=\frac{1}{2}$.
Worked solution & mark scheme
This 2-mark question has a full step-by-step worked solution and mark scheme. One marking point: “Uses a suitable proportionality rule such as $y = kx^2$ and determines $k$.” …
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