Question

If two quantities x and y vary direct proportion with each other . then -.​

Answer 1

If two quantities x and y vary direct proportion with each other . then -.

then they are in direct proportion

or

directly proportional to each other

Answer 2

Two quantities x and y are said to be in inverse proportion if an increase in x causes a proportional decrease in y (and vice-versa) in such a manner that the product of their corresponding values remains constant. That is, if xy = k, then x and y are said to vary inversely.

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