How to Find the Vector Between Two Points

A vector PQ from point P to point Q

The vector between two points can easily be expressed using the position vectors of each point. The point P = (x1,y1) can be rewritten as a position vector: OP = (x1,y1).

You do the same with the other point Q = (x2,y2), and get OQ = (x2,y2). You can now create the vector between the two points by subtracting the end point from the starting point, which is the difference OQ OP. This is how you find the vector between two points:

Rule

The Vector Between Two Points

PQ = OQ OP = (x2,y2) (x1,y1) = (x2 x1,y2 y1)

Example 1

You have the points A = (2, 6) and B = (3,7). Find AB.

Rewrite the points as position vectors:

OA = (2, 6) ,OB = (3,7) .

Next, find AB:

AB = OB OA = (3,7) (2, 6) = (5,13) .

AB = OB OA = (3,7) (2, 6) = (5,13) .

Want to know more?Sign UpIt's free!