Study Barn - For the function ƒ, y = ƒ(x) is inversely proportional to x, where x > 0. If ƒ(3) = 6, what is the value of ƒ(2)?

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For the function ƒ, y = ƒ(x) is inversely proportional to x, where x > 0. If ƒ(3) = 6, what is the value of ƒ(2)?

A. 4

B. 8

C. 9

D. 12

E. 18

Since y = ƒ(x) is inversely proportional to x, it follows that ƒ(x) = for some constant c. You can use ƒ(3) = 6 to find the value of c: = 6, so c = 18.
Therefore, ƒ(2) = = 9.

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david

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Taken: 78 times

Added: 4/3/2009

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Taggged: Math, Mathamatics, SAT

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