If THE POINTS (X,Y) ,(X1,Y1) AND (X-X1,Y-Y1) ARE COLLINEAR ,SHOW THAT XY1 = X1Y .ALSO ,SHOW THAT THE LINE JOINING THE GIVEN POINTS PASSES THROUGH THE ORIGIN.
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If THE POINTS (X,Y) ,(X1,Y1) AND (X-X1,Y-Y1) ARE COLLINEAR ,SHOW THAT XY1 = X1Y .ALSO ,SHOW THAT THE LINE JOINING THE GIVEN POINTS PASSES THROUGH THE ORIGIN.