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JEE Main & Advanced Mathematics Circle and System of Circles Question Bank Equations of circle, Geometrical problems regarding circle

  • question_answer
    Which of the following line is a diameter of the circle \[{{x}^{2}}+{{y}^{2}}-6x-8y-9=0\]

    A)            \[3x-4y=0\]                              

    B)            \[4x-3y=9\]

    C)            \[x+y=7\]                                

    D)            \[x-y=1\]

    Correct Answer: C

    Solution :

               Centre (3, 4) is satisfying only\[x+y=7\].


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