Graph Ordered Pairs

By Mr. Bales

Objective By the end of this lesson, you will be able

to graph ordered pairs and find the lengths of line segments on a coordinate grid.

Standard 4MG2.2 - Students will understand that the length of a horizontal line segment equals the difference of the x-coordinates.

Standard 4MG2.3 - Students will understand that the length of a horizontal line segment equals the difference of the y-coordinates.

Introduce On your desk you have a coordinate grid.

Watching me, let’s place a star on the grid?

What ordered pair names the location of the star?

(3, 5) Place a dot at (6, 5) Move from point (3, 5) to (6, 5). How did

you get there? Place a dot at (6, 2) Move from (6, 5) to (6, 2). How did you get

there?

Mallory and Nicole

Mallory and Nicole are on a treasure hunt. What ordered pair gives the location of the treasure?

0

10

9

8

7

4

1

3

2

6

5

1 2 3 4 5 6 7 8 9 10

• Graph point B at (-3, 4)

• Start at (0,0)

• Move 3 units to the left.

• Then, move up 4 units.

• Graph point B at (-3, 4)

1 2 3 4-1-2-1

-4 -3

-3

-4

-2

3

2

1

4

0

B

Let’s watch Mrs. Veraghese do this problem!!

Find the length of the line segment between each set of ordered pairs.

1 2 3 4-1-2

-1

-4 -3

-3

-4

-2

3

2

1

4

0

(-1, 4)

(-1, 2)

•The line segment is vertical.

•Subtract the y-coordinates

•4-2 = 2

•The length is 2 units.

Find the length of the line segment between each set of ordered pairs.

(1, -3) (4, -3)

•The line segment is horizontal.

•Subtract the x-coordinates

•4-1 = 3

•The length is 3 units.

1 2 3 4-1-2-1

-4 -3

-3

-4

-2

3

2

1

4

0

Bales Bucks

Find the length of the line segment between each set of ordered pairs.

(4, 7), (4, 12) (4, -2), (6, -2) (5, -12), (5, 0) (-4, 8), (-4, 17)

Assignment

Page 478 - #’s 6 - 18 Get them all correct - No Math

Homework