document.write( "Question 56068: Given f(x)=3x+4
\n" ); document.write( "Find f -1(x) \n" ); document.write( "

Algebra.Com's Answer #38071 by funmath(2933) $\"\"$ $\"About$

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Given f(x)=3x+4
\n" ); document.write( "Find $\"f%5E%28-1%29%28x%29\"$
\n" ); document.write( "Let y=f(x)
\n" ); document.write( "y=3x+4
\n" ); document.write( "Switch the x's and y's and solve for y.
\n" ); document.write( "x=3y+4
\n" ); document.write( "x-4=3y+4-4
\n" ); document.write( "x-4=3y
\n" ); document.write( " $\"%28x-4%29%2F3=3y%2F3\"$
\n" ); document.write( " $\"%28x-4%29%2F3=y\"$
\n" ); document.write( "Let $\"y=f%5E%28-1%29%28x%29\"$
\n" ); document.write( " $\"highlight%28f%5E%28-1%29%28x%29=%28x-4%29%2F3%29\"$
\n" ); document.write( "Happy Calculating!!! \n" ); document.write( "

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