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Find k, if PQ || RS and P (2, 4), Q (3, 6), R (3,1), S (5, k).

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Find k, if PQ || RS and P (2, 4), Q (3, 6), R (3,1), S (5, k).

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But, line PQ || line RS … [Given]

∴ Slope of line PQ = Slope of line RS

∴ 2 = k - 1/2

∴ 4 = k – 1 

∴ k = 4 + 1 

∴ k = 5

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