9 The function f is defined by
$$f ( x ) = \frac { x ( x + 3 ) } { x + 4 } \quad ( x \in \mathbb { R } , x \neq - 4 )$$
9
- Find the interval ( \(a , b\) ) in which \(\mathrm { f } ( x )\) does not take any values.
Fully justify your answer.
9 - Find the coordinates of the two stationary points of the graph of \(y = \mathrm { f } ( x )\)
9 - Show that the graph of \(y = \mathrm { f } ( x )\) has an oblique asymptote and find its equation.
\section*{Question 9 continues on the next page}
9 - Sketch the graph of \(y = \mathrm { f } ( x )\) on the axes below.
[0pt]
[4 marks]
\includegraphics[max width=\textwidth, alt={}, center]{44e22a98-6424-4fb1-8a37-c965773cb7b6-16_1100_1100_406_470}
\includegraphics[max width=\textwidth, alt={}, center]{44e22a98-6424-4fb1-8a37-c965773cb7b6-17_2493_1732_214_139} - Fird \(\begin{aligned} & \text { Do not write }
& \text { outside the } \end{aligned}\)