Mathematics 9709 · AS & A Level · Functions

Functions — practice question

The curve given by $y = f(x)$ is carried over to the curve given by $y = g(x)$ by a stretch in the $x$-direction with factor $0.5$, then a translation of $\begin{pmatrix}0\\1\end{pmatrix}$.
(a)[3]

The diagram below gives the graph of $y = f(x)$. On the diagram sketch the graph of $y = g(x)$.

(b)[2]

Find an expression for $g(x)$ in terms of $f(x)$.

Worked solution & mark scheme

This 5-mark question has a full step-by-step worked solution and mark scheme. One marking point: Three lowest points of transformed graph plotted correctly at $y=2$

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