anonymous
  • anonymous
if Y varies inversely as X , when Y=4 and X=15 .?
Mathematics
katieb
  • katieb
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anonymous
  • anonymous
what's the rest of the question?
anonymous
  • anonymous
none. thats only.
anonymous
  • anonymous
If y varies inversely with x that means as y increases, then x decreases. I.e., y = k/x for some constant k. If you can determine this constant of proportionality, k, then you have the expression you seek. You are given y = 4 when x = 15. 4 = k/15. Solve for k.

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anonymous
  • anonymous
60
anonymous
  • anonymous
k=60 ?
anonymous
  • anonymous
Right. So now that you know k = 60, what would the general equation become?
anonymous
  • anonymous
i always solve for k ?
anonymous
  • anonymous
Pretty much.
anonymous
  • anonymous
how to solve for k ? multiply the Y and X?
anonymous
  • anonymous
thanks :)

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