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1.3 Coordinate geometry in the (x, y) plane

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Question 7

The circle with equation x2+y2−10x+ky+20=0x^2 + y^2 - 10x + ky + 20 = 0x2+y2−10x+ky+20=0 has radius 3.

Find the two possible values of the constant kkk.

[4]
Markscheme

1.3 Coordinate geometry in the (x, y) plane Questions

  1. A Level
  2. /Maths
  3. /1.3 Coordinate geometry in the (x, y) plane

76 exam-style questions on WJEC A Level Maths 1.3 Coordinate geometry in the (x, y) plane, covering 1.3.1 Coordinate geometry in the (x, y) plane, 1.3.2 Coordinate geometry in the (x, y) plane, 1.3.3 Coordinate geometry in the (x, y) plane, and 1.3.4 Coordinate geometry in the (x, y) plane. Each one has a worked solution and a mark scheme showing where the marks go.

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