**Definition of Cartesian Plane**

- A Cartesian Plane is a plane consisting of a set of two lines intersecting each other at right angles. The horizontal line is the
*X*-axis and the vertical one is the*Y*-axis, and the point of their intersection is called the origin with the coordinates (0, 0).

**More about Cartesian Plane**

- The location of any point on the coordinate plane is denoted by using pair of coordinates (
*X*,*Y*), where*X*is the horizontal distance from the origin and*Y*is the vertical distance from the origin. - The
*X*and*Y*-axis on the coordinate plane is always perpendicular to each other.

**Example of Cartesian Plane**

- The location of point
**P**is (4, 3), as the point**P**is placed 4 units (away from the origin) horizontally and 3 units (away from the origin) vertically.

**Solved Example on Cartesian Plane**

Identify the coordinates of the point C on the graph.

Choices:

A. (- 5, 1)

B. (5, - 1)

C. (- 1, - 5)

D. (- 5, - 1)

Correct Answer: D

Solution:

Step 1:Start at the origin.

Step 2:The point C is 5 units to the left from theY-axis.

Step 3:So, theX-coordinate of point C is - 5.

Step 4:Point C is 1 unit below theX-axis.

Step 5:So, theY-coordinate of point C is - 1.

Step 6:The coordinates of the point C are (- 5, - 1).

**Related Terms for Cartesian Plane**

- Axis
- Coordinates
- Horizontal Line
- Intersecting Lines
- Origin
- Plane
- Point
- Right Angle
- Vertical Line
*X*-axis*Y*-axis