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11-08-2018
Mathematics

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What is the value of x=9

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luck6021 luck6021

11-08-2018

Inversely proportional means that the relation between y and x is of the form

y = c/x

where c is a constant.

Get c from knowing y=42 when x=6.

42 = c/6

Then c = 6*42 = 252

Therefore,

y = 252 / x

For x=9,

y = 252/9 = 28

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