The document discusses the midpoint formula and how to calculate the midpoint between two points on a coordinate plane. It provides the example of finding the midpoint between the points (1,2) and (3,-2). The midpoint is calculated by taking the average of the x-coordinates and the average of the y-coordinates of the two points, which in this case is (2,0). It also includes a link to a video that further explains how to use the midpoint formula.