9 It is given that the equation of a curve is
$$y = \frac { x ^ { 2 } - 2 a x } { x - a }$$
where \(a\) is a positive constant.
- Find the equations of the asymptotes of the curve.
- Show that \(y\) takes all real values.
- Sketch the curve \(y = \frac { x ^ { 2 } - 2 a x } { x - a }\).
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