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Circles

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Question 19

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 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.

[5]
Markscheme

Circles Questions

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

37 exam-style questions on Edexcel AS Level Maths Circles, 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. Each one has a worked solution and a mark scheme showing where the marks go.

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