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In which of the following case, do the quantities vary directly with each other? - Mathematics

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Question

In which of the following case, do the quantities vary directly with each other?

Options

  • x 0.5 2 8 32
    y 2 8 32 128
  • p 12 22 32 42
    q 13 23 33 43
  • r 2 5 10 25 50
    s 25 10 5 2 0.5
  • u 2 4 6 9 12
    v 18 9 6 4 3
MCQ

Solution

x 0.5 2 8 32
y 2 8 32 128

Explanation:

x = 0.5, 2, 8, 32 and y = 2, 8, 32, 128

If we multiply x with 4, we get the directly required result as same as shown in corresponding y. In this case, as the value of x increases, the value of y also increases.

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Chapter 10: Direct and Inverse Proportions - Exercise [Page 316]

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NCERT Exemplar Mathematics [English] Class 8
Chapter 10 Direct and Inverse Proportions
Exercise | Q 7. | Page 316

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