- The circle \(C\) has equation
$$x ^ { 2 } + y ^ { 2 } - 6 x + 10 y + 9 = 0$$
- Find
- the coordinates of the centre of \(C\)
- the radius of \(C\)
The line with equation \(y = k x\), where \(k\) is a constant, cuts \(C\) at two distinct points.
- Find the range of values for \(k\).