The Coordinate Plane

Objective:

Graph points on a coordinate plane.

A coordinate plane is formed when two number lines intersect.

The number lines separate the coordinate plane into four regions

called quadrant.

An ordered pair of numbers, such as (3, -2), used to locate a point in the coordinate plane.

X-coordinate corresponds to a number on the X- axis.

Y-coordinate corresponds to a number on the Y-axis.

The origin is at (0,0).

When locating an ordered pair, moving right and up on

a coordinate plane is in the positive direction.

Moving left and down is in the negative direction.

Steps to graph an ordered pair:

1. Start at the origin.

2. Move left or right on the X-axis to find the X-coordinate.

3. Then moveup or down to find the Y-coordinate.

Homework: The Coordinate Plane