Mathematics 4024 · O Level · Functions

Functions — practice question

The functions are $f(x) = 2 - 3x$ and $g(x) = x - 4$.
(a)[2]

Find the inverse function, $f^{-1}(x)$.

(b)[3]

Solve the equation $f(x+5) = 3g(x)$.

Worked solution & mark scheme

This 5-mark question has a full step-by-step worked solution and mark scheme. One marking point: “Hence, $f^{-1}(x)=\frac{2-x}{3}$” …

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