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  • Observe the below table and find which pair of variables (here x and y) are in inverse proportion.

Observe the below table and find which pair of variables (here x and y) are in inverse proportion.

iii)

x  90 60 45 30 20 5 
y  10 15 20 25 30 35

 

Answers (1)

best_answer

Finding if x and y are in inverse proportion:

Two quantities x and y are said to vary in inverse proportion, if there exists a relation of the type xy = k between them, k being a constant

so, calculating xy for each case,

We have,

90\times 10 = 900       

60\times 15 = 900       

45\times 20 = 900

30\times 25 = 750       

20\times 30 = 600       

5\times 35 = 175

Clearly, xy is not equal to a constant value 'k',

Hence, x and y are not inversely proportional.

Posted by

Divya Prakash Singh

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