Splash Screen

1. A

2. B

A. < B. >

Use < or > to make a true sentence.

–21 __ –15

(over Lesson 2-2)

A. < B. >

5 __ –5

0 __ –1

A. < B. >

1. A

2. B

3. C

4. D

(over Lesson 2-2)

A. 7, 4, 0, –1, –6

B. –1, –6, 0, 4, 7

C. 0, –1, 4, –6, 7

D. –6, –1, 0, 4, 7

Order 7, –1, 0, 4, –6 from least to greatest.

Main Idea and Vocabulary

Key Concept: Coordinate Plane

Example 1:Naming Points Using Ordered Pairs

Example 2:Graph an Ordered Pair

Example 3:Locate an Ordered Pair

Example 4:Identify Quadrants

• coordinate plane

• x-axis (horizontal)

• y-axis (vertical)

• Origin (0, 0)

• Quadrant – 1 of 4 sections

Graph points on a coordinate plane (2.8.8G) (M7.C.3.1).

• ordered pair (1, 2)

• x-coordinate (x, y)

• y-coordinate (x, y)

Naming Points Using Ordered Pairs

Write the ordered pair that names point R. Then state the quadrant in which the point is located.

Start at the origin.

Answer: So, the ordered pair for point R is (–2, 4). Point R is located in Quadrant II.

Move left on the x-axis to find the x-coordinate of point R, which is –2.

Move up to find the y-coordinate, which is 4.

1. A

2. B

3. C

4. D

A. (–3, –1); Quadrant III

B. (2, 1); Quadrant I

C. (3, 1); Quadrant I

D. (3, –1); Quadrant IV

Write the ordered pair that names point M. Then name the quadrant in which the point is located.

Graph an Ordered Pair

Graph and label point M(3, 5).

Answer: Start at the origin.

The x-coordinate is 3. So, move 3 units to the right.

Draw a dot and label it M(3, 5).

Next, since the y-coordinate is 5, move 5 units up.

1. A

2. B

3. C

4. D

Graph and label the point G(–2, –4).

A. B.

C. D.

G

G

G

G

GEOGRAPHY Use the map of Utah shown below. In which quadrant is Vernal located?

Vernal is located in the upper right quadrant, Quadrant I.

Answer: Quadrant I

Locate an Ordered Pair

1. A

2. B

3. C

4. D

A. Quadrant I

B. Quadrant II

C. Quadrant III

D. Quadrant IV

GEOGRAPHY Use the map of Utah. In which quadrant is Tremonton located?

Which of the cities labeled on the map is located in Quadrant IV?

Quadrant IV is the lower right quadrant. So, Bluff is in Quadrant IV.

Answer: Bluff

Identify Quadrants

1. A

2. B

3. C

4. D

A. Tremonton

B. Vernal

C. Bluff

D. Cedar City

Name a city from the map of Utah that is located in Quadrant III.

REVIEW

State the quadrant of each point:

1. P (-2, -4)

2. Q (5, -2)

3. R (0, 3)

4. S (-3, 1)

III

IV

y-axis

II

COOL-DOWN PROBLEMS

1. 138 + 246

2. 814 + 512

3. 2,653 + 4,817

4. 6,003 + 5,734

384

1,326

7,470

11,737

End of the Lesson

Five-Minute Check (over Lesson 2–2)

Image Bank

Math Tools

Adding Integers

Comparing and Ordering Integers

Subtracting Positive and Negative Integers

1. A

2. B

3. C

4. D

(over Lesson 2-2)

A. You can tell that 8 numbers in the set are greater than 0, and 1 number is less than 0.

B. You can tell that 8 numbers in the set are greater than 0, and 2 numbers are less than 0.

C. You can tell that 8 numbers in the set are less than 0, and 1 number is greater than 0.

D. You can tell that 8 numbers in the set are less than 0, and 2 numbers are greater than 0.

If 0 is the second smallest number in a set of 10 integers, what can you conclude about the other 9 numbers?

1. A

2. B

3. C

4. D

(over Lesson 2-2)

A. 0 < –7

B. –3 > 6

C. –2 > –5

D. 1 < –4

Which of the following is a true sentence?