document.write( "Question 369852: Use composition to prove that f(x)=x+7/-2 is the inverse of g(x)=-2x-7 \n" ); document.write( "
Algebra.Com's Answer #263536 by robertb(5830)\"\" \"About 
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\"g%28f%28x%29%29+=+-2%28%28x%2B7%29%2F-2%29-7+=+%28x%2B7%29-7+=+x\". Also
\n" ); document.write( "\"f%28g%28x%29%29+=+%28%28-2x-7%29%2B7%29%2F-2+=+%28-2x%29%2F-2+=+x\". Therefore f is the inverse function of g.
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