SOLUTION: If y varies directly as x, and y = 28 when x = 7, find x when y = 52

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Question 865891: If y varies directly as x, and y = 28 when x = 7, find x when y = 52
Answer by ewatrrr(24785) About Me  (Show Source):
You can put this solution on YOUR website!


Hi

Let k represent the constant of the direct variation

 y = kx

28 = 7k,  k = 4

y = 4x

52 = 4x

13 = x