Download Lesson 1 - Coweta County Schools

Notes Over 2.1
Graph the numbers on a number line. Then write two
inequalities that compare the two numbers.
1.
- 4 and - 7
2.
l l l l l l l l l
-8 -7 -6 -5 -4 -3 -2 -1 0
l
-3
4  7
7  4
- 2.3 and - 2.8
l
-2
l
-1
2.3  2.8
2.8  2.3
l
0
Notes Over 2.1
Graph the numbers on a number line. Then write two
inequalities that compare the two numbers.
3.
l
-8
5 and - 6
l
-6
l
-4
l
-2
5  6
6  5
l
0
l
2
l
4
l
6
Notes Over 2.1
Write the numbers in increasing order.
4.
2, -3, -2.5, 4.5, -1.5
First think of their graph.
l
-4
l
-3
l
-2
l
-1
l
0
l
1
l
2
l
3
l
4
l
5
-3, -2.5, -1.5, 2, 4.5
Notes Over 2.1
Write the numbers in increasing order.
3 1
5
5.  , ,  2,  , 1
4 4
4
First think of their graph.
l
-3
l
l
-2
l
l
-1
l
l
0
l
l
1
5
3 1
2,  ,  , , 1
4
4 4
l
Notes Over 2.1
Find the opposite of the number. Then find its absolute value.
Opposite - two numbers that are the same distance from
the origin but on opposite sides.
Absolute value - distance from the origin
6.  17
.
7. 4.2
8.  5
Opposite:
Opposite:
Opposite:
17
.
4.2
5
Absolute Value:
Absolute Value:
Absolute Value:
17
.
4.2
5
Notes Over 2.1
Find the speed and the velocity of the object.
Speed - positive form of the rate.
Velocity - indicates speed and direction, can be positive
or negative.
9. A duck hawk descends 10. A balloon descends at
at 150 miles per hour
17 feet per second when
when striking its prey.
landing.
Speed:
Speed:
150 mph
17 ft per sec
Velocity:
Velocity:
150 mph
17 ft per sec
Notes Over 2.1