Distance between points on the coordinate plane

The  exercise appears under the 6th grade (U.S.) Math Mission. This exercise calculates the distance between two points on the coordinate plane.

Types of Problems
There is two types of problem in this exercise:
 * 1. Plot the points on the coordinate plane and tell the distance: This problem has a coordinate plane and the student is asked to plot the points on it. Then, the student has to calculate the distance between the points.


 * 2. Calculate the distance between the points: This problem has three points on a coordinate plane. The student is asked to calculate the distance between two of the points.

Strategies
Knowledge of the x-axis and the y-axis are essential to ensure success on this exercise. The Quadrants: The first quadrant is (+,+). The second quadrant is (-,+). The third quadrant is (-,-). The fourth quadrant is (+,-). 
 * 1) The x-axis always comes before the y-axis. (Just like x comes before y.)
 * 2) There is four quadrants on the coordinate plane: