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The cost of a notebook is twice the cost...

The cost of a notebook is twice the cost of a pen. Write a linear equation in two variables to represent this statement. (Take the cost of a notebook to be x and that of a pen to be y).

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RD SHARMA ENGLISH-LINEAR EQUATIONS IN TWO VARIABLES -All Questions
  1. Write each of the following as an equation in two variables x\ a n d...

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  2. Write each of the following as an equation in two variables x\ a n d...

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  3. The cost of a notebook is twice the cost of a pen. Write a linear equa...

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  4. Express the following linear equations in the form a x+b y+c=0 and i...

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  5. Express the following linear equations in the form a x+b y+c=0 and i...

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  6. Express the following linear equations in the form a x+b y+c=0 and i...

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  7. Write each of the following equation in two variables: (i) 2x=3 (...

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  8. Write each of the following equation in two variables: (i)5x=7/2 ...

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  9. The cost of ball pen is Rs.5 less than half of the cost of fountain ...

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  10. Check which of the following are solutions of the equations x-2y=4and...

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  11. Check which of the following are solutions of the equations x-2y=4and...

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  12. Write four solution of the equation pi x + y =9.

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  13. Find the value of k, if x=2, y=1is a solution of the equations 2x+3y=k...

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  14. If x=1 , y=2 is a solution of the equation a^2x+a y=3, then find the...

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  15. If x = 2k-1 and y=k is a solution the equation 3x-5y-7=0; find the val...

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  16. If x=k^2 and y=k is a solution of the equation x-5y+6=0 then find the ...

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  17. Find the solution of the form x=a ,\ y=0 and x=0,\ y=b for the foll...

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  18. Write two solutions for each of the following equations: (i) 3x+4y=7...

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  19. Write two solutions for each of the following equations: x+piy=4 (...

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  20. Write two solutions of the following are solutions of the equation 2...

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