(a)[2]
State the value of $a$ and give one possible value of $b$.
(b)[3]
A second curve has equation $y=f(x)$ and one stationary point at $(p,q)$, where $p$ and $q$ are constants. It is transformed into the curve with equation $y=-3f\left(\frac{1}{4}(x+8)\right)$. For the transformed curve, find the coordinates of the stationary point, and express your answer in terms of $p$ and $q$.