Annetta_Martin
y varies inversely as x. When y = 5, x = 12. Determine y when x = 15.



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Annetta_Martin
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Is it 4?

marsss
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5*12=y*15
so y=4 you're right :)

thomaster
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i think 12/5 = 2.4 so thats the factor
5 * 2.4 = 12
? * 2.4 = 15
(15*5)/12 = 6.25
or \[6\frac{ 1 }{ 4 }\]

Annetta_Martin
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Thank you! :)

surjithayer
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given y=k/x,where k is a constant
when x=12 ,y=5
5=k/12,
or k=60
y=60/x
when x=15,y=60/15=4