SOLUTION: If Y = 5 when x = 2, find Y, when x is 4 anyone know this I WOULD LOVE ANY HELP! :)

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Question 640801: If Y = 5 when x = 2, find Y, when x is 4
anyone know this I WOULD LOVE ANY HELP! :)
Answer by MathLover1(20849) About Me  (Show Source):
You can put this solution on YOUR website!

If y1+=+5 when x1+=+2, find y, when x=4
only in case that y varies directly as x
we could also write this as a proportion:
x1%2Fy1=x%2Fy
2%2F5+=+4%2Fy
2y+=+4%2A5
2y+=+20
y+=+10