document.write( "Question 128852: Can I have some help finding the inverse function of f.
\n" ); document.write( "f(x) = -4 + x \n" ); document.write( "

Algebra.Com's Answer #94266 by jim_thompson5910(35256) $\"\"$ $\"About$

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$\"f%28x%29+=+-4+%2B+x+\"$ Start with the given function\r
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\n" ); document.write( "\n" ); document.write( " $\"x+=+-4+%2B+f%28x%29+\"$ Swap the x and f(x) variables\r
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\n" ); document.write( "\n" ); document.write( " $\"x%2B4+=+f%28x%29+\"$ Add 4 to both sides to isolate f(x)\r
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\n" ); document.write( "\n" ); document.write( "So the inverse function is $\"f%5E%28-1%29%28x%29=x%2B4+\"$ \n" ); document.write( "

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