Asked by Sara
If y varies inversely with x and y = 8 when x = 5, then what is y when x = 2?
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Answers
Answered by
Reiny
"y varies inversely with x" ---> y = k(1/x)
y = 8 when x = 5
8 = k/5
k = 40
so : y = 40/x
plug in x=2, and find y
y = 8 when x = 5
8 = k/5
k = 40
so : y = 40/x
plug in x=2, and find y
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