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Question

Circle x2+y2+6y=0 touches

A
y-axis at the origin
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B
x-axis at the origin
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C
x-axis at the point (3, 0)
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D
The line y + 3 = 0
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Solution

The correct option is B x-axis at the origin
Centre is (0, -3) and R=02+9+0=3.

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