Back to: O level mathematics notes syllabus uganda

A point can be described by a number pair. Consider point A described

by a pair of numbers on the Cartesian plane as shown below.

The first number i.e. 8 is the horizontal displacement of point A from

the origin O. This is known as the x–coordinates. The second number

i.e. 6 is the vertical displacement of point A from the origin. This is

known as the y–coordinate.

Pont A is located by moving 8 units along the x–axis and 6 units by

moving along the y–axis. Any point can be located in this way.

Example

Draw the Cartesian plane and locate the following points.

A (3, 2), B (2, -4), C (0, 3), D (5, 0), and E (-3, -1)

Solution

Example

Obtain the coordinates of the following points from the Cartesian

plane below