Transcript Lesson 2-3 PowerPoint

(over Lesson 2-2)
Use < or > to make a true sentence.
–21 __ –15
A. <
B. >
5 __ –5
A. <
B. >
0 __ –1
A. <
B. >
1.
2.
A
B
(over Lesson 2-2)
Order 7, –1, 0, 4, –6 from least to greatest.
A. 7, 4, 0, –1, –6
B. –1, –6, 0, 4, 7
C. 0, –1, 4, –6, 7
D. –6, –1, 0, 4, 7
1.
2.
3.
4.
A
B
C
D
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
Graph points on a coordinate plane (2.8.8G) (M7.C.3.1).
• coordinate plane
• ordered pair (1, 2)
• x-axis (horizontal)
• x-coordinate (x, y)
• y-axis (vertical)
• y-coordinate (x, y)
• Origin (0, 0)
• Quadrant – 1 of 4 sections
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.
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.
Answer: So, the ordered pair for point R is (–2, 4).
Point R is located in Quadrant II.
Write the ordered pair that
names point M. Then name the
quadrant in which the point is
located.
A. (–3, –1); Quadrant III
B. (2, 1); Quadrant I
C. (3, 1); Quadrant I
D. (3, –1); Quadrant IV
1.
2.
3.
4.
A
B
C
D
Graph an Ordered Pair
Graph and label point M(3, 5).
Start at the origin.
The x-coordinate is 3. So,
move 3 units to the right.
Next, since the y-coordinate is
5, move 5 units up.
Draw a dot and label it
M(3, 5).
Answer:
Graph and label the point G(–2, –4).
A.
G
B.
G
C.
D.
G
1.
2.
3.
4.
G
A
B
C
D
Locate an Ordered Pair
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
GEOGRAPHY Use the map
of Utah. In which quadrant is
Tremonton located?
A. Quadrant I
B. Quadrant II
C. Quadrant III
D. Quadrant IV
1.
2.
3.
4.
A
B
C
D
Identify Quadrants
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
Name a city from the map
of Utah that is located in
Quadrant III.
A. Tremonton
B. Vernal
C. Bluff
D. Cedar City
1.
2.
3.
4.
A
B
C
D
REVIEW
State the quadrant of each point:
1. P (-2, -4)
III
2. Q (5, -2)
IV
3. R (0, 3)
y-axis
4. S (-3, 1)
II
COOL-DOWN PROBLEMS
1. 138 + 246
384
2. 814 + 512
1,326
3. 2,653 + 4,817
7,470
4. 6,003 + 5,734
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
(over Lesson 2-2)
If 0 is the second smallest number in a set of 10 integers,
what can you conclude about the other 9 numbers?
A.
B.
C.
D.
You can tell that 8 numbers in the
set are greater than 0, and 1
number is less than 0.
You can tell that 8 numbers in the
set are greater than 0, and 2
numbers are less than 0.
You can tell that 8 numbers in the
set are less than 0, and 1 number
is greater than 0.
You can tell that 8 numbers in the
set are less than 0, and 2 numbers
are greater than 0.
1.
2.
3.
4.
A
B
C
D
(over Lesson 2-2)
Which of the following is a true sentence?
A. 0 < –7
B. –3 > 6
C. –2 > –5
D. 1 < –4
1.
2.
3.
4.
A
B
C
D