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Inequality Rules
Solving Inequalities
5
Mathematics
Not Applicable
08/24/2011

Additional Mathematics Flashcards

 


 

Cards

Term
[image]
Definition
Term

Steps to Solve (1 variable):

 

1.  Isolate Variable/Letter: 

(follow algebra rules)

2.  Change arrow ONLY  if dividing or multiplying by a

negative #

Definition

3x + 2 < 10 (minus 2 to both sides)

                     -2    -2

  3x < 8 (rewrite inequality)

(divide both sides by 3)

3x < 8

3     3

x < 8

      3

Term
Graphing Inequalities
Definition

< or > (open dot)

< or > (closed dot)

Term

2x > 10 (divide both sides by 2)

x > 5

[image]

 

Definition
Open circle means it cannot = that number!
Term

9 - 4x <  8

(subtract 9 to both sides, then divide by -4)

x > 1/4

[image]

Definition
Closed dot because it can = the number!
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