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x and y are said to vary directly with e...

x and y are said to vary directly with each other if for some positive number k, ______ =k.

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NCERT EXEMPLAR-DIRECT AND INVERSE PROPORTIONS -EXERCISES
  1. When two quantities x and y are in proportion or vary they are writte...

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  2. Both x and y are said to vary with each other if for some positive nu...

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  3. x and y are said to vary directly with each other if for some positive...

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  4. Fill in the blanks in each of the following so as to make the state...

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  5. Fill in the blanks in each of the following so as to make the state...

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  6. If 12 pumps can empty a reservoir in 20 hours, then time required by 4...

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  7. If x varies inversely as y, then

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  8. When the speed remains constant, the distance travelled is proportiona...

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  9. On increasing a, b increases in such a manner that a/b remains and pos...

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  10. If on increasing a, b decreases in such a manner that remains constan...

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  11. If two quantities p and q vary inversely with each other then of thei...

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  12. If two quantities p and q vary inversely with each other then of thei...

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  13. The perimeter of a circle and its diameter vary with each other.

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  14. A car is travelling 48 km in one hour. The distance travelled by the c...

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  15. An auto rickshaw takes 3 hours to cover a distance of 36 km. If its sp...

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  16. If the thickness of a pile of 12 cardboard sheets is 45 mm, then the t...

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  17. If x varies inversely as y and x = 4 when y = 6, then when x = 3 the v...

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  18. In direct proportion a1/b1 = a2/b2

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  19. In case of inverse proportion a2b2

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  20. If the area occupied by 15 postal stamps is 60 cm^2, then the area occ...

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