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SSC Quantitative Aptitude Coordinate Geometry Question Bank Coordinate Geometry and Graphs of Linear Equations (I)

  • question_answer
      The value of k for which the lines \[x+2y-9=0\]and \[k\text{ }x+4y+5=0\]are parallel, is

    A) \[k=2\]

    B) \[k=1\]

    C) \[k=-1\]

    D) \[k=-2\]

    Correct Answer: A

    Solution :

    [a] Since, the given lines are parallel, we have \[\frac{1}{k}=\frac{2}{4}\]\[\Rightarrow \]\[k=2\]


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