SOLUTION: If p varies directly as n^2, and p = 28 when n = –4, find a. the constant of variation. b. an equation for the variation. c. p when n = 9.

Algebra ->  Functions -> SOLUTION: If p varies directly as n^2, and p = 28 when n = –4, find a. the constant of variation. b. an equation for the variation. c. p when n = 9.      Log On


   

Question 403329: If p varies directly as n^2, and p = 28 when n = –4, find
a. the constant of variation.
b. an equation for the variation.
c. p when n = 9.
Answer by solver91311(24713) About Me  (Show Source):
You can put this solution on YOUR website!




So:



a) solve for

b) Re-write:



by substituting the value determined in part a) in place of

c) use the equation derived in part b) substituting 9 for

John

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