Question

a.)if y varies inversly as x,and if y =9 when x=2 ,find y when x=3
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Answer 1

Answer:

Since, Y is inversely proportinal to X.

Hence, Y= k/X --------(i)

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Now, put initial values y=9 and x=2, to find out the value of k.

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9= k/2

k= 9×2

k = 18 -------(ii)

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From i and ii, we get,

Y= 18/X.

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Now, to find the new value of Y, put X=3 and you will have your answer.

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Y= 18/3

Y= 6.