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If the system of equations 2x+3y=7,\ \...

If the system of equations `2x+3y=7,\ \ \ 2a x+(a+b)y=28` has infinitely many solutions, then (a)`a=2b` (b) `b=2a` (c) `a+2b=0` (d) `2a+b=0`

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RD SHARMA ENGLISH-PAIR OF LINEAR EQUATIONS IN TWO VARIABLES-All Questions
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  2. Write the values of k for which the system of equations x+k y=0,\ \...

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  3. Write the set of values of a and b for which the following syste...

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  4. For what value of k , the following pair of linear equations has in...

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  5. Write the number of solutions of the following pair of linear equat...

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  6. Write the number of solutions of the following pair of linear equat...

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  7. The value of k for which the system of equations k x-y=2 and 6x-2y=3...

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  8. The value of k for which the system of equations 2x+3y=5,\ \ \ \ 4x+...

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  9. The value of k for which the system of equations x+2y-3=0 and 5x+k ...

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  10. The value of k for which the system of equations 3x+5y=0 and k x+10...

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  11. If the system of equations 2x+3y=7,\ \ \ \ (a+b)x+(2a-b)y=21 has inf...

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  12. If the system of equations 3x+y=1,\ \ (2k-1)x+(k-1)y=2k+1 is inconsi...

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  13. If a m!=b l , then the system of equations a x+b y=c ,\ \ \ \ l x+m...

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  14. If the system of equations 2x+3y=7,\ \ \ 2a x+(a+b)y=28 has infinite...

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  15. The value of k for which the system of equations x+2y=5,\ \ 3x+k y+1...

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  16. If 2x-3y=7 and (a+b)x-(a+b-3)y=4a+b represent coincident lines, then...

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  17. If a pair of linear equations in two variables is consistent, then t...

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  18. If the system of equations 2x+3y=5,\ \ \ \ 4x+k y=10 has infinitely ...

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  19. If the system of equations k x-5y=2,\ \ \ \ 6x+2y=7 has no solution,...

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  20. The area of the triangle formed by the line x=3,\ \ y=4 and x=y is ...

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