jaysam08 jaysam08
  • 30-06-2016
  • Mathematics
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the variables X +y are directly proportional, and y=2 when x=3. what is the value of y when x=9?

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meerkat18
meerkat18 meerkat18
  • 30-06-2016
When the two variables is directly proportional to each other, they increase or decrease depends on how much it would be. In your equation x+y where two variables is directly proportional to each other, The increase of X is drastically 2 times greater from its last value. so it means that the value of Y should be 2 times greater than its value. So the value of Y should be 2^3 or 8.
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