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JEE Main & Advanced AIEEE Solved Paper-2008

  • question_answer
    The perpendicular bisector of the line segment joining \[P\left( 1,4 \right)\] and \[Q\left( k,3 \right)\] has y-intercept -4. Then a possible value of k is       AIEEE  Solved  Paper-2007

    A) - 2                          

    B) - 4                          

    C) 1                             

    D) 2

    Correct Answer: B

    Solution :

    Equation of perpendicular bisector of PQ is \[y-\frac{7}{2}=\left( k-1 \right)\left( x-\frac{k+1}{2} \right)\] Y-intercept is, \[\frac{8-{{k}^{2}}}{2}=-4\Rightarrow k=\pm 4\]


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