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Question 9
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The circle C C\,C has centre (5,k)(5, k)(5,k), where k k\,k is a constant. The line y=2x+1y = 2x + 1y=2x+1 is a tangent to the circle CCC, touching C C\,C at the point A(3,7)A(3, 7)A(3,7).

Find an equation for CCC.

[4]

Circles Questions

  1. A Level
  2. /Maths
  3. /Circles

Practise Edexcel A Level Maths Circles with exam-style questions for A Level Maths. 28 questions covering 6.1 Midpoints and Perpendicular Bisectors, 6.2 Equation of a Circle, 6.3 Intersections of Straight Lines and Circles, 6.4 Use Tangent and Chord Properties, and 6.5 Circles and Triangles, matched to the Edexcel A Level Maths (9MA0) specification and written in Paper 1, Paper 2 and Paper 3 style. Every question includes a full worked solution and mark scheme, so you can see where marks are awarded rather than just whether you got the answer right.

Question bank