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1.6 C: Coordinate geometry in the (x, y) plane

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Question 71

The circle C C\,C has centre (5,k)(5, k)(5,k), where k k\,k is a constant.

The line with equation y=2x+1y = 2x + 1y=2x+1 is a tangent to CCC, touching C C\,C at the point A(3,7)A(3, 7)A(3,7).

Find an equation for CCC.

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Markscheme

1.6 C: Coordinate geometry in the (x, y) plane Questions

  1. A Level
  2. /Maths
  3. /1.6 C: Coordinate geometry in the (x, y) plane

143 exam-style questions on AQA A Level Maths 1.6 C: Coordinate geometry in the (x, y) plane, covering 1.6.1 Equation of a straight line, 1.6.2 Coordinate geometry of the circle, 1.6.3 Parametric equations of curves (A-level only), and 1.6.4 Parametric equations in modelling (A-level only). Each one has a worked solution and a mark scheme showing where the marks go.

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