1. LI4
Inequalities-
True or False?

2. Classify the following statements as true or false.
LI4
Classify the following statements as true or false.
1. If 2  3, then 2•2  2•3.
4  6
True
2. If 9  7, then 9-1  7-1.
8  6
True
3. If 4  -1, then 4(-2)  -1(-2).
-8  2
False
Why is -8  2 false?
What caused the false answer?
-8  2

3. True or False? 4. If 7  10, then (3)7  (3)10.
LI4
True or False?
4. If 7  10, then (3)7  (3)10.
21  30
True
5. If –6 -4, then -6•-4  -4•-4.
24  16
24  16
False
6. If –16  -20, then 4
-4  -5
True

4. True or False? 7. If 9  -12, then 8. If 6  -2, then 6+8  -2+8.
-3  4
-3  4
False
8. If 6  -2, then 6+8  -2+8.
14  6
True
9. If –3  -1, then –3+-5 
24  16
True

5. Conclusion:
When multiplying or dividing an inequality by a negative number, reverse the symbol.