10th Class Mathematics Pair of Linear Equations in Two Variables Question Bank MCQs - Pair of Linear Equations in Two Variables

  • question_answer
    For what value of k, the pair of equations \[\text{2x}+\text{5y}+\text{5}=0\]and \[kx+4y=10,\] has a unique solution?

    A) \[k=\frac{8}{3}\]

    B) \[k\ne \frac{8}{3}\]

    C) \[k=3\]

    D) \[k\ne 3\]

    Correct Answer: B

    Solution :

    [b] Unique solution, \[\frac{2}{k}\ne \frac{3}{4}\Rightarrow k\ne \frac{8}{3}.\]


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