6.2 GRAPH ORDERED PAIRS Objective: To use ordered pairs of numbers to graph or identify points on a grid.

A GRID

a network of lines that cross each other to form a series of squares, creating columns and rows.

CAN YOU THINK OF A TIME WHEN YOU HAD TO LOCATE A POINT BY MOVING ALONG AND UP A GRID?

Making a graph

Finding your city in a map

Completing a crossword puzzle

A coordinate grid has two perpendicular lines, or axes, labeled like number lines.

The horizontal axis is called the x-axis. The vertical axis is called the y-axis.

The point where the x-axis and y-axis intersect is called the origin.

Origin

COORDINATE GRID

Is a grid used to locate points.

Points on a coordinate grid can be given a unique name in the same way each house on a street has a unique number.

HOW DO YOU THINK YOU CAN NAME A POINT ON A COORDINATE GRID?

The numbers on a coordinate grid are used to locate points. We use an ordered pair to name points on a coordinate grid.

ORDERED PAIR Each point on a

coordinate grid can be identified by an ordered pair of numbers; that is, a number on the x-axis called an x-coordinate, and a number on the y-axis called a y-coordinate.

( 3 , 7 )

Why do you think they are called ordered pair?

CLASS WORK

Txt Book Page 121 Q 6 to 12, Q 18 to 23 and Q 28 to 31

Homework:Pg 29 Q 1 to 16, Q 22 to 28 Note: Plot on the grid in PW