Lesson 2-10 "Inequalities by Mult. or Div."
Part 1 "Using Positive Division or Multiplication"

1. If A (<, >, ≤, ≥, or ≠) B and C ≥ 0,
    then A/C (<, >, ≤, ≥, or ≠) B/C or
    then A*C (<, >, ≤, ≥, or ≠) B*C, EX's:
4X > 40
 		      M ≤ 2
      2
4X > 40
4       4		 (2)M ≤ 2(2)
 2
X > 10      M ≤ 4
Part 2 "Using Negative Division or Multiplication"
2. Flip (reverse) the Symbol !
3. If A (<, >, ≤, ≥, or ≠) B and C < 0 (negative),
    then A/C (>, <, ≥, ≤ and ≠) B/C or
    then A*C (>, <, ≥, ≤ and ≠) B*C, EX's:
36 ≥ -9T
 		      Y < 7
     -3
36 ≥ -9T
-9      -9		 (-3)Y < 7(-3)
    -3
 -4 ≤  T      Y > -21
This page was last modified 09/14/07