Students determine the distance between two points on a coordinate plane using the Pythagorean Theorem. Take the coordinates of two points you want to find the distance between. We will find the distance between two points -3 2 and 6 7 on a coordinate plane.
It does not terribly matter which point is which as long as you keep the labels 1 and 2 consistent throughout the problem.
The x-coordinate of C is -1 so point C is -1 1 unit from the y-axis. Derived from the Pythagorean Theorem the distance formula is used to find the distance between two points in the plane. Call one point Point 1 x1y1 and make the other Point 2 x2y2. To use the distance formula to find the length of a line start by finding the coordinates of the line segments endpoints.