ORDERED PAIR
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 xcoordinate and y is the ycoordinate.
More About Ordered Pair
 In threedimensional 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).
Examples of Ordered Pair

Following are some examples of ordered pairs.
(5, 2), (0, 0), (2, 5), (0.3,  0.7)
Video Examples: Ordered Pair
Solved Example on Ordered Pair
Ques: Graph the ordered pair ( 4, 3) on the coordinate plane and call it A.
Choices:
A. Graph 1B. Graph 2
C. Graph 3
D. Graph 4
Correct answer: A
Solution:

Step 1: Start at the origin.
Step 2: The xcoordinate of the given ordered pair is  4. So, move 4 units to the left of the yaxis.
Step 3: The ycoordinate of the given ordered pair is 3. So, move 3 units up from the xaxis.
Step 4: Draw a dot and label it A. The graph would look like the one below.
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