what is direct and inverse proportion
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A direct and inverse proportion are used to show how the quantities and amount are related to each other. ... For example, if we say, a is proportional to b, then it is represented as 'a∝b' and if we say, a is inversely proportional to b, then it is denoted as 'a∝1/b'.
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Answer:
direct proportion is ad=bc
indirect proportion is ab=cd
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