OCR Pure 1 2018 March — Question 1

Exam BoardOCR
ModulePure 1 (Pure Mathematics 1)
Year2018
SessionMarch
TopicCircles
1 A circle with equation \(x ^ { 2 } + y ^ { 2 } + 6 x - 4 y = k\) has a radius of 4 .
  1. Find the coordinates of the centre of the circle.
  2. Find the value of the constant \(k\).
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