document.write( "Question 50433: Re-post: Need your help???\r
\n" ); document.write( "\n" ); document.write( "For the function defined by f(x) =5x-4, find a formula for f^-1(x).
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Algebra.Com's Answer #33520 by venugopalramana(3286)\"\" \"About 
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For the function defined by f(x) =5x-4, find a formula for f^-1(x).
\n" ); document.write( "LET Y=5X-4
\n" ); document.write( "5X=Y+4
\n" ); document.write( "X=(Y+4)/5
\n" ); document.write( "HENCE F^-1(Y)=(Y+4)/5
\n" ); document.write( "F^-1(X)=(X+4)/5
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