Quelpr
2 marksCentre and Radius of a Circle

CSEC Additional Mathematics · 2017 · Paper 2 · Question 3(a)(ii)

A circle C has the equation x² + y² + 4x - 2y - 20 = 0.

State the coordinates of the centre and the value of the radius of circle C.

The mark scheme is shown once you've answered.

Practise this question

Other parts of this question

  1. 3(a)(i)Express the equation in the form (x + f)² + (y + g)² = r².[2 marks]
  2. 3(a)(iii)Determine the points of intersection of circle C and the equation y = 4 - x.[4 marks]
  3. 3(b)(i)Determine the product of the two vectors, p and q.[1 mark]
  4. 3(b)(ii)Determine the angle between the two vectors.[3 marks]

More practice: the rest of this paper · more Centre and Radius of a Circle questions · all CSEC Additional Mathematics past papers