# If <span lang="EN

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

So, position vector of (5, –3) is  Given A = (4, –1) and let the coordinates of B = (x, y)

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

Recall the vector is given by    But, it is given that  By comparing both sides, we get x – 4 = 5 and y + 1 = –3

x = 5 + 4 = 9

and y = –3 – 1 = –4

So, x = 9 and y = –4

Thus, coordinates of point B are (9, –4).

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