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1.5.11 Equation of a circle

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Question 3

The circle C C\,C has equation x2+y2+4x−6y+c=0x^2+y^2+4x-6y+c=0x2+y2+4x−6y+c=0, where c c\,c is a constant. The point (1,2)(1,2)(1,2) lies on CCC.

Find the value of c c\,c and hence write the equation of C C\,C in centre-radius form.

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Markscheme

1.5.11 Equation of a circle Questions

  1. A Level
  2. /Maths
  3. /1.5.11 Equation of a circle

8 exam-style questions on OCR (MEI) A Level Maths 1.5.11 Equation of a circle. Each one has a worked solution and a mark scheme showing where the marks go.

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