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  5. Linear Equations in Two Variables

9th Class Mathematics Linear Equations in Two Variables Question Bank Linear Equations in Two Variables

  • question_answer
    \[x=3\]and \[y=-1\] is a solution of which of the linear equations given?

    A) \[x+y=3\]                    

    B) \[2x+y=3\]       

    C)        \[x+2y=1\]       

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

    Correct Answer: C

    Solution :

    Substituting \[x=3\]and \[y=-1\]in \[x+2y=1\] \[\Rightarrow \]\[3+2(-1)=1\] \[\Rightarrow \]\[3-2=1\Rightarrow 1=1\,(True)\] Hence \[(3,-1)\]is the solution of \[x+2y+1.\]


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