Edexcel Paper 1 Specimen — Question 3

Exam BoardEdexcel
ModulePaper 1 (Paper 1)
SessionSpecimen
TopicCircles
3. A circle \(C\) has equation $$x ^ { 2 } + y ^ { 2 } - 4 x + 10 y = k$$ where \(k\) is a constant.
  1. Find the coordinates of the centre of \(C\).
  2. State the range of possible values for \(k\).
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