Mathematics 0580 · IGCSE · Functions

Functions — practice question

The function is defined by $f(x)=5-4x$.
(a)[1]

Calculate $f(-3)$.

(b)[2]

Calculate $f(3 - 2x)$. Express your answer in its simplest form.

(c)[2]

Find $f^{-1}(x)$.

Worked solution & mark scheme

This 5-mark question has a full step-by-step worked solution and mark scheme. One marking point: “The value is $17$.” …

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