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1 Pure Mathematics

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Question 526

The circle C C\,C has equation x2+y2−8x+6y+5=0x^2 + y^2 - 8x + 6y + 5 = 0x2+y2−8x+6y+5=0

a.

Find the coordinates of the centre of CCC.

[2]
b.

Find the exact radius of CCC.

[1]
c.

The line with equation y=ky = ky=k, where k k\,k is a constant, is a tangent to CCC. Find the possible values of kkk.

[2]
Markscheme

1 Pure Mathematics Questions

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