document.write( "Question 676011: given f(x)= (7/x)-3 find f^-1(x) \n" ); document.write( "
Algebra.Com's Answer #420156 by nerdybill(7384)\"\" \"About 
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given f(x)= (7/x)-3 find f^-1(x)
\n" ); document.write( ".
\n" ); document.write( "f(x)= (7/x)-3
\n" ); document.write( "y= (7/x)-3
\n" ); document.write( "switch x for y and y for x:
\n" ); document.write( "x= (7/y)-3
\n" ); document.write( "solve for y:
\n" ); document.write( "xy = 7-3y
\n" ); document.write( "xy+3y = 7
\n" ); document.write( "y(x+3) = 7
\n" ); document.write( "y = 7/(x+3)
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\n" ); document.write( "so:
\n" ); document.write( "f^-1(x) = 7/(x+3)\r
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