OPSS 2EM MYE 2018 Q9

The diagram below shows the graph of \(y = x^2 - x - 12\).

1. The graph cuts the \(x\)-axis at \(B\) and \(C\). Find the coordinates of \(B\) and \(C\).
   Answer \(B\) (.................... , ....................) [1]
   Answer \(C\) (.................... , ....................)[1]
2. Find the gradient of line \(AC\).
   Answer ....................................................[2]
3. Find the equation of the line of symmetry.
   Answer ....................................................[1]