SOLUTION: y varies directly as the square of x. When x = 2, y = 40. Find x when y = 640

Algebra ->  Equations -> SOLUTION: y varies directly as the square of x. When x = 2, y = 40. Find x when y = 640      Log On


   

Question 711831: y varies directly as the square of x. When x = 2, y = 40. Find x when y = 640
Answer by solver91311(24713) About Me  (Show Source):
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varies directly as the square of so:

Substitute 2 for and 40 for . Then solve for

Once you have determined a value for , substitute that value for and 640 for , then solve for

John

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