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If x = 5 and y = 4 is one of the solutio...

If x = 5 and y = 4 is one of the solutions of equation 4x - ky = 10 . Find the value of k.

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The correct Answer is:
k = 2.5
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KUMAR PRAKASHAN-LINEAR EQUATIONS IN TWO VARIABLES -Skill Testing Exercise
  1. Express each of the following linear equations in two variables in the...

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  2. Find for solutions of each of the following equation : x + y = 7

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  3. Find for solutions of each of the following equation : 2x - y = 12

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  4. Find for solutions of each of the following equation : y = 3x

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  5. Find for solutions of each of the following equation : x - y = 5

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  6. For each of the points given below , check whether it is a solution o...

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  7. For each of the points given below , check whether it is a solution o...

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  8. For each of the points given below , check whether it is a solution o...

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  9. For each of the points given below , check whether it is a solution o...

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  10. For each of the points given below , check whether it is a solution o...

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  11. For each of the points given below , check whether it is a solution o...

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  12. If x = 2 and y = 5 is one of the solutions of equations 5x + 2y =k , f...

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  13. If x = 5 and y = 4 is one of the solutions of equation 4x - ky = 10 . ...

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  14. Give equations of any four lines passing through point (5,7)

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  15. Ariv received certain amount form his dad and another amount from his ...

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  16. Draw the graph of the equation 3x + 2y = 12 and state the coordinates ...

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  17. Draw the coordinates of its point of intersection with the x - axis an...

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  18. The cost of book is Rs 10 more than three time the cost of a pen From ...

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  19. Give the geometric representation of the equation 3x - 12 = 0 as equa...

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  20. Give the geometric representation of the equation 2y + 10 = 0 as an eq...

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