[" 30.The three vertices of a parallelog...

[" 30.The three vertices of a parallelogram "ABCD" are "A(3,-4),B(-1,-3)" and "C(-6,2)" .Find the "],[" coordinates of vertex "D" and find the area of "ABCD.],[" Find the values of "k" if the points "A(k+1,2k),B(3k,2k+3)" and "C(5k-1,5k)" are collinear."]

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