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3 marksEquation of a Circle

CSEC Additional Mathematics · 2013 · Paper 2 · Question 3(a)(i)

A circle, C, has centre with coordinates A (2,1) and passes through the point B (10,7).

Express the equation of the circle in the form x² + y² + hx + gy + k = 0, where h, g and k are integers to be determined.

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Other parts of this question

  1. 3(a)(ii)Find an equation for l.[3 marks]
  2. 3(b)Find the value of λ such that OP and OQ are perpendicular.[3 marks]
  3. 3(c)Find the unit vector in the direction of AB.[3 marks]

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