anonymous
  • anonymous
If y is 6 when x is 3 and y varies directly with x, find y when x is 8. a) 4 b) 11 c) 16
Mathematics
chestercat
  • chestercat
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Godlovesme
  • Godlovesme
y directly varies with x means \[y/x\]
Godlovesme
  • Godlovesme
so substitute the numbers they gave u for y and x 6/3 and y/8
Godlovesme
  • Godlovesme
@makayla.boze make sense?

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anonymous
  • anonymous
yes, I get it now @Godlovesme
Godlovesme
  • Godlovesme
great :) can u solve for y ?
Godlovesme
  • Godlovesme
6/3= x/8 first do cross multiplication
Pawanyadav
  • Pawanyadav
Let y=kx K is proportionality constant. As. 6=k×3 k=6/3=2 Now Y=k×8 As k=2 Y=2×8=16
anonymous
  • anonymous
ok, that's what I thought @Godlovesme
Pawanyadav
  • Pawanyadav
Did that help you
Godlovesme
  • Godlovesme
@Pawanyadav nice job but please let the users do some of the work too :)
anonymous
  • anonymous
Godlovesme
  • Godlovesme
welcome (:

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