Question :- Observe the table given below and find whether 'X' and 'Y' vary directly or not.
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Answers
Answer:
(i)
Clearly, xy=39=515=824=1133=2678=13(constant)Therefore, x and y are proportional.Clearly, xy=39=515=824=1133=2678=13(constant)Therefore, x and y are proportional.
(ii)
Clearly, xy=2.510=416=7.530=1040=14, while 1442=13i.e., 2.510=416=7.530=1040is not equal to 1442.Therefore, x and y are not proportional.Clearly, xy=2.510=416=7.530=1040=14, while 1442=13i.e., 2.510=416=7.530=1040is not equal to 1442.Therefore, x and y are not proportional.
(iii)
Clearly, xy=515=721=927=2575=13, while 1560=1872=14i.e., 515=721=927=2575is not equal to 1560 and1872.Therefore, x and y are not proportional.Clearly, xy=515=721=927=2575=13, while 1560=1872=14i.e., 515=721=927=2575is not equal to 1560 and1872.Therefore, x and y are not proportional.
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