Algebra 1 Video Notes
Chapter 4 Section 2 – Solving Inequalities using Addition and Subtraction
Video 1: Solving Inequalities using Addition
1. Solving inequalities is like _______________________________________________
2. Step 1: _______________________
Step 2:_______________________
Step 3: _______________________
3. Examples:
a)
b)
Video 2: Solving Inequalities using Subtraction
4. Step 1: _______________________
Step 2:_______________________
Step 3: _______________________
5. Examples:
a)
b)
Chapter 4 Section 3 – Solving Inequalities using Multiplication and Division
Video 3: Solving Inequalities using Multiplication
6. !!!IMPORTANT!!!
When you multiply each side of an inequality by __________________, then you must
_____________________________________________________________
7. Examples:
a)
- Multiply each side by -3:
- Simplify and Reverse:
- Check your answer:
(Plug your answer into the
____________ equation)
b)
Video 4: Solving Inequalities using Multiplication
8. !!!IMPORTANT!!!
When you multiply each side of an inequality by __________________, then you
must ____________________________________________________________
9. Step 1: _______________________
(check to see if ________________________________)
Step 2:_______________________
Step 3: _______________________
10. Examples:
a)
b)
PRACTICE PROBLEMS!! (This MUST be finished by the end of the class period)
11. Solve 12  x  5 . Graph and check your solution
12. Solve n  7  2 . Graph and check your solution.
13. Solve y  5  7 . Graph and check your solution.
14. Solve t  3  8 . Graph and check your solution.
15. Solve
x
 1 . Graph and check your solution.
2
16. Solve 
k
 1 . Graph and check the solution.
4
17. Solve  5z  25 . Graph and check the solution.
18. Solve 12  3w . Graph and check the solution.