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The point A divides the join of P (-5, 1) and Q (3, 5) in the ratio k : 1. Find the two values of k for which the area of ΔABC where B is (1, 5) and C (7, -2) is equal to 2 units.

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Let A(x,y) divides the join of P(-5, 1) and Q(3, 5) in the ratio k : 1.

But area of ΔABC=2  [given],

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