9709 P1 - Jun 2003 - Q5
704
The function f is defined by \(f : x \mapsto ax + b\), for \(x \in \mathbb{R}\), where \(a\) and \(b\) are constants. It is given that \(f(2) = 1\) and \(f(5) = 7\).
- Find the values of \(a\) and \(b\).
- Solve the equation \(ff(x) = 0\).
