3.2 and 3.3H 1 step inequalites.notebook
November 17, 2015
3.2 to 3.3 Solving Inequalities involving 1-step
Objective: Be able to use addition, subtraction, multiplication and
division to solve inequalities.
Recall: Inverse operations:
Addition and Subtractions
addition undoes subtractions and subtraction undoes addition
Multiplication and Division
Multiplication undoes division and division undoes multiplication
**Remember­ when solving inequalites using multiplication and division, you must flip the sign if you multiply or divide by a negative!***
Oct 5­10:16 AM
1
3.2 and 3.3H 1 step inequalites.notebook
November 17, 2015
Examples: Solve and graph the solutions on the number line.
­10 ­9
­8
­7
­6
­5 ­4
­3
­2
­1
0
1
2
3
4
5
6
7
8
9
10
­10 ­9
­8
­7
­6
­5 ­4
­3
­2
­1
0
1
2
3
4
5
6
7
8
9
10
­10 ­9
­8
­7
­6
­5 ­4
­3
­2
­1
0
1
2
3
4
5
6
7
8
9
10
­10 ­9
­10 ­9
­8
­7
­6
­8
­7
­6
­10 ­9
­8
­7
­5 ­4
­2
­1
1
0
2
­3
­2
­1
0
1
­5 ­4
­3
­2
­1
0
­5 ­4
­6
­3
3
2
1
4
5
3
4
2
3
6
5
4
7
8
10
9
6
7
8
9
10
5
6
7
8
9
10
Oct 5­10:20 AM
2
3.2 and 3.3H 1 step inequalites.notebook
November 17, 2015
The hard drive on your computer has a capacity of 250 GB. You
used 115 GB. You want to save some home videos to your hard
drive. What are the possible sizes of home video collection you
can save? write and solve an inequality.
Oct 5­10:26 AM
3
3.2 and 3.3H 1 step inequalites.notebook
November 17, 2015
A cheerleading squad earns $5.50 per car washed. How many cars
does the squad need to wash to earn at least $77? Write and solve
and inequality.
Oct 5­10:27 AM
4
3.2 and 3.3H 1 step inequalites.notebook
November 17, 2015
Homework:
Practice 3.2 and Practice 3.3
Oct 5­10:29 AM
5