Question
If the line x + 2by + 7 = 0 is diameter of the circle x2+y2−6x+2y=0, then b =
Answer: Option D
:
D
Here the centre of circle (3, -1) must lie on the line x + 2by + 7 = 0
Therefore, 3 - 2b + 7 = 0 ⇒ b = 5
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:
D
Here the centre of circle (3, -1) must lie on the line x + 2by + 7 = 0
Therefore, 3 - 2b + 7 = 0 ⇒ b = 5
Was this answer helpful ?
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