document.write( "Question 923580: find the missing coordinate of m=-4/5 and the given points are (5,9) and (x,13). \n" ); document.write( "
Algebra.Com's Answer #560146 by Alan3354(69443)\"\" \"About 
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\n" ); document.write( " (2, -8) and (x, 2); slope: -10/3
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\n" ); document.write( " Slope m = diffy/diffx
\n" ); document.write( " m = (-8-2)/(2 - x) = -10/3
\n" ); document.write( " -10/(2-x) = -10/3
\n" ); document.write( " -30 = -10(2-x) = -20 + 10x
\n" ); document.write( " 10x = -10
\n" ); document.write( " x = -1
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