document.write( "Question 1059941: \[f(x) = \frac{3x - 7}{x + 1}
\n" ); document.write( "Find the domain and range of $f$, give answer interval form.
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Algebra.Com's Answer #674999 by josgarithmetic(39620) $\"\"$ $\"About$

You can put this solution on YOUR website!
f(x)=(3x-7)/(x+1)\r
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\n" ); document.write( "\n" ); document.write( " $\"f%28x%29=%283x-7%29%2F%28x%2B1%29\"$ \r
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\n" ); document.write( "\n" ); document.write( "Zero at $\"7%2F3\"$ and undefined at $\"x=-1\"$ .\r
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document.write( "INTERVAL                 EXAMPLE x      SIGN OF f(x)\r\n" );
document.write( "                -3            (-)/(-)=(+), positive\r\n" );
document.write( "                   0            (-)/(+)=(-), negative\r\n" );
document.write( "                   4            (+)/(+)=(+), positive\r\n" );
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\n" ); document.write( "\n" ); document.write( "The function has a horizontal asymptote of y=3.\r
\n" ); document.write( "\n" ); document.write( "Will f(x) ever be $\"3\"$ ?
\n" ); document.write( " $\"3x-7=3%28x%2B1%29\"$
\n" ); document.write( " $\"3x-7=3x%2B3\"$ ----impossible to solve this. No solution.\r
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\n" ); document.write( "\n" ); document.write( "RANGE: The real numbers such that $\"system%28-infinity%3Cy%3C3%2CAND%2C3%3Cy%3Cinfinity%29\"$
\n" ); document.write( "DOMAIN: Set of real numbers such that $\"system%28-infinity%3Cx%3C-1%2CAND%2C-1%3Cx%3C=7%2F3%2CAND%2C7%2F3%3C=x%3Cinfinity%29\"$ \r
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\n" ); document.write( "\n" ); document.write( " $\"graph%28350%2C350%2C-12%2C6%2C-6%2C12%2C%283x-7%29%2F%28x%2B1%29%29\"$ \n" ); document.write( "

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