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JEE Main & Advanced Mathematics Straight Line Question Bank Slope of line, Equation of line in different forms

  • question_answer
    A(-1, 1), B(5, 3) are opposite vertices of a square in xy-plane. The equation of the other diagonal (not passing through (A, B) of the square is given by    [EAMCET 1993]

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

    B) \[2x-y+3=0\]

    C) \[y+3x-8=0\]                          

    D) \[x+2y-1=0\]

    Correct Answer: C

    Solution :

    The required diagonal passes through the mid-point of \[AB\] and is perpendicular to \[AB\]. So its equation is \[y-2=-3(x-2)\] or \[3x+y-8=0\].


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