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JEE Main & Advanced Mathematics Straight Line Question Bank Distance between two lines, Perpendicular distance of the line from a point Position of point w.r.t. line

  • question_answer
    Which pair of points lie on the same side of \[3x-8y-7=0\] [Roorkee 1990]

    A)            (0, -1) and (0, 0)                       

    B)            (4, -3) and (0, 1)

    C)            (-3, -4) and (1, 2)                      

    D)            (-1, -1) and (3, 7)

    Correct Answer: D

    Solution :

               \[{{L}_{(-1,-1)}}=3(-1)-8(-1)-7<0\]                    \[{{L}_{(3,7)}}=3\times 3-8\times 7-7<0\]                    Hence (-1, -1) and (3, 7) lie on the same side of line.


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