# Express <span lan

(i) Given A = (4, –1) and B = (1, 3)

We know position vector of a point (x, y) is given by , where and are unit vectors in X and Y directions.

Let position vectors of points A and B be and respectively. We also have .

Recall the vector is given by     Recall the magnitude of the vector is given as Here, x = –3 and y = 4    Thus, and .

(ii) Given A = (–6, 3) and B = (–2, –5)

We know position vector of a point (x, y) is given by , where and are unit vectors in X and Y directions.

Let position vectors of points A and B be and respectively. We also have .

Recall the vector is given by     Recall the magnitude of the vector is given as Here, x = 4 and y = –8    Thus, and .

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