document.write( "Question 1203418: solve by addition of line segments show whether the points a(-3,0), b(-1,-1) and c(5,-4) lie on a straight line.\r
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Algebra.Com's Answer #838955 by josgarithmetic(39620)\"\" \"About 
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\"addition of line segments\" ?
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\n" ); document.write( "\n" ); document.write( "To know if the three points collinear, find slopes of every pair of them. All same? Line.
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