Solving Inequalities - JC Schools
[Pages:39]Solving Inequalities
Inequality Signs
An inequality is like an equation, but instead of an equal sign (=) it has one of
these signs: < : less than : less than or equal to > : greater than : greater than or equal to
"x < 5"
means that whatever value x has, it must be less than 5.
What could x be?
"x -2"
means that whatever value x has, it must be greater than or equal to -2.
What could x be?
Graphing Rules
Symbol
< >
Circle
Open Open Closed Closed
Direction of Arrow
Left Right Left
Right
x < 5 x > -2 x -8 x 4
Examples:
x < -6 x > 2 x 0 x -7
You Try:
x + 5 > 13
Practice
5 + x < 7
2x ? 14 > 4
x/4 + 3 < 7
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