The centres of the circles \[{{x}^{2}}+{{y}^{2}}=1\], \[{{x}^{2}}+{{y}^{2}}+6x-2y=1\] and \[{{x}^{2}}+{{y}^{2}}-12x+4y=1\] are [MP PET 1986]

The centres of the circles \[{{x}^{2}}+{{y}^{2}}=1\], \[{{x}^{2}}+{{y}

1.	The centres of the circles \[{{x}^{2}}+{{y}^{2}}=1\], \[{{x}^{2}}+{{y}^{2}}+6x-2y=1\] and \[{{x}^{2}}+{{y}^{2}}-12x+4y=1\] are [MP PET 1986]
A.	Same
B.	Collinear
C.	Non-collinear
D.	None of these
Answer» C. Non-collinear

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The centres of the circles \[{{x}^{2}}+{{y}^{2}}=1\], \[{{x}^{2}}+{{y}^{2}}+6x-2y=1\] and \[{{x}^{2}}+{{y}^{2}}-12x+4y=1\] are [MP PET 1986]

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