document.write( "Question 1115405: Find the point dividing the interval AB in the ratio 1:3 if A(-1,1) and B is (3,-1) \n" ); document.write( "
Algebra.Com's Answer #730315 by MathLover1(20849)\"\" \"About 
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Find the point dividing the interval AB in the ratio \"1%3A3\" if A(\"-1\",\"1\") and B is (\"3\",\"-1\") \r
\n" ); document.write( "\n" ); document.write( "To find the point \"P\" that divides a segment \"AB\" into a particular ratio, determine the ratio \"k\" by writing the numerator over the sum of the numerator and the denominator of the given ratio.
\n" ); document.write( "Next, find the rise and the run (slope) of the line. Finally, add \"k\" times the run to the \"x\"-coordinate of \"A\" and add \"k\" times the rise to the \"y\"-coordinate of \"A\". \r
\n" ); document.write( "\n" ); document.write( "This process is summarized with the following formula:\r
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\n" ); document.write( "\n" ); document.write( "P(\"x\",\"y\")=(\"x%5B1%5D%2Bk%28x%5B2%5D-x%5B1%5D%29\" , \"y%5B1%5D%2Bk%28y%5B2%5D-y%5B1%5D%29\" )\r
\n" ); document.write( "\n" ); document.write( "you have:\r
\n" ); document.write( "\n" ); document.write( "\"k=1%2F3\"\r
\n" ); document.write( "\n" ); document.write( "A(\"-1\",\"1\") => \"x%5B1%5D=-1\", \"y%5B1%5D=1\"
\n" ); document.write( "and
\n" ); document.write( "B is (\"3\",\"-1\") => \"x%5B2%5D=+3\", \"y%5B2%5D=-1\"\r
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\n" ); document.write( "\n" ); document.write( "(\"x\",\"y\")=(\"-1%2B%281%2F3%29%283-%28-1%29%29\" , \"1%2B%281%2F3%29%28-1-1%29\" )\r
\n" ); document.write( "\n" ); document.write( "(\"x\",\"y\")=(\"-1%2B%281%2F3%29%283%2B1%29\" , \"1%2B%281%2F3%29%28-2%29\" )\r
\n" ); document.write( "\n" ); document.write( "(\"x\",\"y\")=(\"-1%2B4%2F3\" , \"1-2%2F3\" )\r
\n" ); document.write( "\n" ); document.write( "(\"x\",\"y\")=(\"-3%2F3%2B4%2F3\" , \"3%2F3-2%2F3\" )\r
\n" ); document.write( "\n" ); document.write( "(\"x\",\"y\")=(\"1%2F3\" ,\"+1%2F3\" )\r
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