# The area of a tri

We know that, the area of a triangle with vertices (x1, y1), (x2, y2), (x3, y3) is given by

[given]

Now, expanding along second column, we get

-(k) {-3 – 3} = 18

-k (-6) = 18

6k = 18

k = 3

Hence, the correct option is (b)

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