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The coordinates of points A, B, C and P are (6, 3), (–3, 5), (4, –2) and (x, y), respectively. Show that

(Area of ∆ PBC) /(Area of ∆ ABC) = |x + y - 2|/7

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The area of ∆ABC is

The area of ∆PBC is modulus of the determinant

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