SOLUTION: if the varies directly as x what is the value of y in these ordered paris? (5,20) and(15,y)

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Question 616157: if the varies directly as x what is the value of y in these ordered paris?
(5,20) and(15,y)
Answer by Alan3354(69443) About Me  (Show Source):
You can put this solution on YOUR website!
if the varies directly as x what is the value of y in these ordered paris?
(5,20) --> y = 4x
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(15,y)