document.write( "Question 1182219: Find the x value so that the line through the points (x,-9) and (0,1) has a slope of -4. \n" ); document.write( "
Algebra.Com's Answer #812182 by MathLover1(20850)\"\" \"About 
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\n" ); document.write( "given:\r
\n" ); document.write( "\n" ); document.write( " the points (\"x\",\"-9\") and (\"0\",\"1\")
\n" ); document.write( " a slope of \"m=-4\"\r
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\n" ); document.write( "\n" ); document.write( "\"m=%28y%5B2%5D-y%5B1%5D%29%2F%28x%5B2%5D-x%5B1%5D%29\"\r
\n" ); document.write( "\n" ); document.write( "\"-4=%281-%28-9%29%29%2F%280-x%29\"\r
\n" ); document.write( "\n" ); document.write( "\"-4=%281%2B9%29%2F%28-x%29\"\r
\n" ); document.write( "\n" ); document.write( "\"-4=10%2F%28-x%29\"\r
\n" ); document.write( "\n" ); document.write( "\"-4%28-x%29=10\"\r
\n" ); document.write( "\n" ); document.write( "\"4x=10\"\r
\n" ); document.write( "\n" ); document.write( "\"x=10%2F4\"\r
\n" ); document.write( "\n" ); document.write( "\"x=5%2F2\"\r
\n" ); document.write( "\n" ); document.write( "\"x=2.5\"\r
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