The Distance Formula
Each segment on a coordinate plane is identified by the coordinates of its endpoints. For example, if A(3, 7) and B(-2, 5) are the endpoints of segment AB, then we not only can determine the position and direction of AB, also can we calculate its length.
Tutorial: Distance Formula
Watch the following tutorial to learn how to find the distance between two points using the Distance Formula. Select the play button to begin the tutorial, and then use the navigation buttons to pause/stop, continue, or reset the tutorial. View the presentation as often as you would like, and take notes as you follow along. Be sure to set your volume at a reasonable level before you begin.