document.write( "Question 1061131: State the horizontal asymptote of the rational functions.
\n" ); document.write( "(these were separate questions but I had to do the same thing on both.)
\n" ); document.write( "f(x) = (7x^2 - 3x -9)/(2x^2 - 4x+5)\r
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\n" ); document.write( "\n" ); document.write( "f(x) = (x+9)/(x^2+ 2x+5) \r
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Algebra.Com's Answer #675968 by josgarithmetic(39630)\"\" \"About 
You can put this solution on YOUR website!
Your second function and the question seem more interesting.\r
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\n" ); document.write( "\n" ); document.write( "\"%28x%2B9%29%2F%28x%5E2%2B2x%2B5%29\" has a sign change at x=-9. Denominator is not factorable, and denominator is positive for all x values.\r
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\n" ); document.write( "\n" ); document.write( "Think how the rational expression goes as x tends either toward negative infinity or toward positive infinity. The denominator increases in size MORE THAN the numerator. This function will become increasingly closer to 0 to the left, and become increasingly closer to zero to the right. Horizontal asymptote is y=0.\r
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\n" ); document.write( "\n" ); document.write( "\"graph%28300%2C300%2C-10%2C10%2C-10%2C10%2C%28x%2B9%29%2F%28x%5E2%2B2x%2B5%29%29\"\r
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\n" ); document.write( "\n" ); document.write( "Same thing closer look:
\n" ); document.write( "\"graph%28300%2C300%2C-9%2C9%2C-3%2C3%2C%28x%2B9%29%2F%28x%5E2%2B2x%2B5%29%29\"
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