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The line segment joining the points \(A \left(  3,2 \right)\) and \(B ( 5, 1 )\) is divides at the point \(P\) in the ratio \( 1:2 \), and it lies on the line \(3x-18y +k =0\). Find the value of \(k\).
 
Answer:  
 
The value of k is .
 
The coordinates of the point P is ii,ii.