document.write( "Question 156953: Stan is so good i had to come back for more.
\n" ); document.write( "1)Given the function y=2x-3/x-1 what are the
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\n" ); document.write( "2)For the function f(x)=x^2(x-2)
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Algebra.Com's Answer #115718 by jim_thompson5910(35256)\"\" \"About 
You can put this solution on YOUR website!
I'll do the first one to get you going in the right direction\r
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\n" ); document.write( "\n" ); document.write( "The x-intercept occurs when \"y=0\". \r
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\n" ); document.write( "\n" ); document.write( "\"y=%282x-3%29%2F%28x-1%29\" Start with the given equation\r
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\n" ); document.write( "\n" ); document.write( "\"0=%282x-3%29%2F%28x-1%29\" Plug in \"y=0\"\r
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\n" ); document.write( "\n" ); document.write( "\"0%28x-1%29=2x-3\" Multiply both sides by \"x-1\"\r
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\n" ); document.write( "\n" ); document.write( "\"0=2x-3\" Multiply 0 and \"x-1\" to get 0\r
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\n" ); document.write( "\n" ); document.write( "\"3=2x\" Add 3 to both sides.\r
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\n" ); document.write( "\n" ); document.write( "\"3%2F2=x\" Divide both sides by 2\r
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\n" ); document.write( "\n" ); document.write( "So the answer is \"x=3%2F2\" which means that the x-intercept is , which is (1.5, 0). Note: the x-intercept is in the form of (x, 0)\r
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\n" ); document.write( "\n" ); document.write( "b)y intercept\r
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\n" ); document.write( "\n" ); document.write( "The y-intercept occurs when \"x=0\"\r
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\n" ); document.write( "\n" ); document.write( "\"y=%282x-3%29%2F%28x-1%29\" Start with the given equation\r
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\n" ); document.write( "\n" ); document.write( "\"y=%282%280%29-3%29%2F%280-1%29\" Plug in \"x=0\"\r
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\n" ); document.write( "\n" ); document.write( "\"y=%280-3%29%2F%280-1%29\" Multiply\r
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\n" ); document.write( "\n" ); document.write( "\"y=%28-3%29%2F%28-1%29\" Subtract\r
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\n" ); document.write( "\n" ); document.write( "\"y=3\" Reduce\r
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\n" ); document.write( "\n" ); document.write( "So the answer is \"y=3\" which means that the y-intercept is Note: the y-intercept is in the form of (0, y)\r
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\n" ); document.write( "\n" ); document.write( "c)vertical asymptote(s)\r
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\n" ); document.write( "\n" ); document.write( "To find the vertical asymptote, just set the denominator equal to zero and solve for x (remember you CANNOT divide by zero)\r
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\n" ); document.write( "\n" ); document.write( "\"x-1=0\" Set the denominator equal to zero\r
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\n" ); document.write( "\n" ); document.write( "\"x=0%2B1\"Add 1 to both sides\r
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\n" ); document.write( "\n" ); document.write( "\"x=1\" Combine like terms on the right side\r
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\n" ); document.write( "\n" ); document.write( "So the vertical asymptote is \"x=1\"\r
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\n" ); document.write( "\n" ); document.write( "d)horizontal asymptote(s)\r
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\n" ); document.write( "\n" ); document.write( "Since the degree of the numerator and the denominator are the same, we can find the horizontal asymptote using this procedure:\r
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\n" ); document.write( "\n" ); document.write( "To find the horizontal asymptote, first we need to find the leading coefficients of the numerator and the denominator.\r
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\n" ); document.write( "\n" ); document.write( "Looking at the numerator \"2x-3\", the leading coefficient is \"2\"\r
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\n" ); document.write( "\n" ); document.write( "Looking at the denominator \"x-1\", the leading coefficient is \"1\"\r
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\n" ); document.write( "\n" ); document.write( "So the horizontal asymptote is the ratio of the leading coefficients. In other words, simply divide \"2\" by \"1\" to get \"%282%29%2F%281%29=2\"\r
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\n" ); document.write( "\n" ); document.write( "So the horizontal asymptote is \"y=2\"\r
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\n" ); document.write( "\n" ); document.write( "e) slant asymptote\r
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\n" ); document.write( "\n" ); document.write( "Since horizontal asymptote exists, there isn't a slant asymptote (you either have one or the other, but not both)\r
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\n" ); document.write( "\n" ); document.write( "Notice if we graph \"y=%282x-3%29%2F%28x-1%29\", we can visually verify our answers:\r
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\n" ); document.write( "\n" ); document.write( "\"Photobucket\r
\n" ); document.write( "\n" ); document.write( "Graph of \"y=%282x-3%29%2F%28x-1%29%29\" with the x-intercept (or the point (1.5, 0)), the y-intercept (0,3), the horizontal asymptote \"y=2\" (blue line) and the vertical asymptote \"x=1\" (green line)\r
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\n" ); document.write( "\n" ); document.write( "With this info, you should have a better understanding on how to approach # 2. If you're still having trouble with # 2, then repost the question.
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