** Definition of Ordered Pair**

- A pair of numbers used to locate a point on a coordinate plane is called an ordered pair.

An ordered pair is written in the form (*x*,*y*) where*x*is the*x*-coordinate and*y*is the*y*-coordinate.

**Examples of Ordered Pair**

- Following are some examples of ordered pairs.

(5, -2), (0, 0), (2, 5), (0.3, - 0.7)

**More about Ordered Pair**

- In three-dimensional cordinates, (
*x*,*y*,*z*) gives the location of a point. It is called an ordered triple. - The ordered pair (5, -2) means the point is located 5 units right and 2 units down the origin.
- The point of intersection of the
*x*- and*y*- axes is called the origin. The ordered pair that describes the origin is (0, 0).

**Solved Example on Ordered Pair**

Graph the ordered pair (- 4, 3) on the coordinate plane and call it A.

Choices:

A. Graph 1

B. Graph 2

C. Graph 3

D. Graph 4

Correct answer: A

Solution:

Step 1:Start at the origin.

Step 2:Thex-coordinate of the given ordered pair is - 4. So, move 4 units to the left of the y-axis.

Step 3:They-coordinate of the given ordered pair is 3. So, move 3 units up from the x-axis.

Step 4:Draw a dot and label it A. The graph would look like the one below.

Step 5:Among the given graphs, Graph 1 matches with our graph.

**Related Terms for Ordered Pair**

- Coordinate
*x*-coordinate*y*-coordinate- Coordinate plane
- Point
- Origin