document.write( "Question 196191: write a function that models each variation.\r
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Algebra.Com's Answer #147067 by Edwin McCravy(20060) $\"\"$ $\"About$

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write a function that models each variation.
\n" ); document.write( "x=3 and y=12 when z=2. z varies directly with y and inversely with x.
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document.write( "The formula for all variation problems is: \r\n" );
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document.write( "                     k*{DIRECTLY OR JOINTLY VARIABLE(s) (or 1 if none)}\r\n" );
document.write( "VARYING VARIABLE = -----------------------------------------------------\r\n" );
document.write( "                         {INVERSELY VARIABLE(s) (or 1 if none)}\r\n" );
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document.write( "The varying variable is z, which goes on the left side.\r\n" );
document.write( "The directly variable is y, which goes in the numerator on the right.\r\n" );
document.write( "The inversely variable is x, which goes in the denominator on the right.\r\n" );
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document.write( "All we need do is find constant k and rewrite this \r\n" );
document.write( "substituting what we get for constant k.\r\n" );
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document.write( "To get k, we substitute the data given, x=3, y=12, z=2.\r\n" );
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document.write( "Now we rewrite  \r\n" );
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document.write( "substituting  for constant \r\n" );
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document.write( "Simplify by multiplying top and bottom on the right \r\n" );
document.write( "side by 2:\r\n" );
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document.write( "Edwin

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