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Coordinate Plane
Definition of Coordinate Plane

• Coordinate Plane is a plane formed by the intersection of a horizontal number line with a vertical number line.
• The horizontal number line is called the x-axis and the vertical number line is called the y-axis.
• The number lines intersect at their zero points. This point of intersection is called the origin and written as (0, 0).

Solved Example on Coordinate Plane

Name the point having the coordinates (- 2.5, 2.5) on the coordinate plane.

Choices:
A. B
B. E
C. G
D. C
Correct Answer: A
Solution:
Step 1: The ordered pair (- 2.5, 2.5) is 2.5 units to the left of the origin and 2.5 units up the x-axis.
Step 2: So, the point with the coordinates (- 2.5, 2.5) is B.

Related Terms for Coordinate Plane

• x-axis
• y-axis
• Plane
• Ordered Pair
• Coordinates
• Origin
• Intersection
• Number Line

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