Mathematics 0580 · IGCSE · Ratio and proportion

Ratio and proportion — practice question

$y$ varies inversely with $(x+1)^{2}$. $y = 50$ when $x = 0.2$.

(a)[2]

Express $y$ in terms of $x$.

(b)[1]

Determine the value of $y$ when $x = 0.5$.

Worked solution & mark scheme

This 3-mark question has a full step-by-step worked solution and mark scheme. One marking point: “$y =\frac{k}{(x+1)^2}$” …