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Mathematics 8 Online
OpenStudy (anonymous):

If f(x) varies directly with x, and f(x) = 45 when x = 9, find the value of f(x) when x = 3. A 5 B 9 C 15 D 27

OpenStudy (anonymous):

@ranga you got this, i know you are a better teach than I am ^_^

OpenStudy (ranga):

This is a direct proportions problem. 45 / 9 = ? / 3 What should be the number in the place of the question mark?

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