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  3. 9th Class
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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
    The cost of a note book is twice the cost of a pen. If the cost of a note book is Rs. \[x\]and that of a pen is Rs. y, then a linear equation in two variables to represent the given condition is ____.

    A) \[~x+2y=0\]                

    B) \[~x-2y=0\]      

    C) \[~2x+y=0\]     

    D)  \[2x-y=0\]                   

    Correct Answer: B

    Solution :

    According to question. \[2\,\times \]cost of pen = cost of note book \[\Rightarrow \]   \[2y=x\,\,\Rightarrow x-2y=0.\]


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