Mathematics 4024 · O Level · Proportion

Proportion — practice question

$y$ varies directly as the cube of $x$. If $x=2$, then $y=4$.

(main)[2]

Calculate $y$ when $x=3$.

Worked solution & mark scheme

This 2-mark question has a full step-by-step worked solution and mark scheme. One marking point: “Applies $y=kx^3$ and determines $k=\frac12$.” …