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  3. 9th Class
  4. Mathematics
  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 shirt of a particular brand is\[Rs.\,\,800\]. What is the linear equation when the cost of x number of shirts is\[Rs.\,\,y\]?

    A) \[x=800y\]                    

    B) \[x=4\] 

    C)        \[y=5x\]           

    D)        \[x=-7\]

    Correct Answer: C

    Solution :

    Cost of one shirt = ` 800 Cost of\[x\]shirts = `\[(800\times x)\] Also ` y is the total cost. \[\therefore \]\[y=800\times x\,i.e.,y=800x\]


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