4.
\begin{figure}[h]
\includegraphics[alt={},max width=\textwidth]{16c69ee4-255e-4d77-955a-92e1eb2f7d3e-05_665_776_233_584}
\captionsetup{labelformat=empty}
\caption{Figure 1}
\end{figure}
Figure 1 shows part of the graph with equation \(y = \mathrm { f } ( x ) , x \in \mathbb { R }\).
The graph consists of two line segments that meet at the point \(Q ( 6 , - 1 )\).
The graph crosses the \(y\)-axis at the point \(P ( 0,11 )\).
Sketch, on separate diagrams, the graphs of
- \(y = | f ( x ) |\)
- \(y = 2 f ( - x ) + 3\)
On each diagram, show the coordinates of the points corresponding to \(P\) and \(Q\).
Given that \(\mathrm { f } ( x ) = a | x - b | - 1\), where \(a\) and \(b\) are constants, - state the value of \(a\) and the value of \(b\).