If y varies inversely as x and y= 4 when x = 1/2 , find y when x = 3?

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2007-01-18 08:45:08 · 2 answers · asked by Math Freak 1990 1 in Science & Mathematics ➔ Mathematics

If y varies inversely as x, that's the same as saying x times y is a constant.

So initially x * y = 1/2 * 4 = 2

If x = 3, then y must be 2/3

2007-01-18 08:55:55 · answer #1 · answered by Mark P 5 · 0⤊ 0⤋

y = x^-2, therefore y(3) = 9

2007-01-18 08:53:03 · answer #2 · answered by gebobs 6 · 0⤊ 0⤋