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).

Video Examples: Coordinate plane

Solved Example on Coordinate Plane

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

    example of  Coordinate Plane
    A. B
    B. E
    C. G
    D. C
    Correct Answer: A


    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.

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