Midpoint formula

The midpoint formula is a formula used to find the halfway point between two coordinates on a graph.

Try to imagine two points on a graph and an imaginary line that connects them. The midpoint formula is used to locate the point at the middle of the imaginary line.

Given two points (x1, y1) and (x2, y2), their midpoint M (a coordinate) is:

Notice that you are taking the average x- and y-values of the two coordinates. This is because the midpoint is located at the vertical and horizontal halfway points between the two points.

Example

(x, y) (x1, y1)
(-3, 5) (-1, 3)
     
     
     
Midpoint at (-2, -1)