solving & graphing one & two step...
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Solving & Graphing One & Two Step Inequalities
Where might I see inequalities in real life?
If it’s any smaller, you’ve got to throw him back!
An inequality states that two quantities either are not equal or may not be equal.
Symbol Meaning Word Phrases
<
>
≤
≥
is less than
is greater than
is greater than or equal to
is less than or equal to
Fewer than, below
More than, above
At most, no more than
At least, no less than
Course 2
Writing Inequalities
◼ There are at least 15 people here.
◼ No more than 20 people can ride this elevator at one time.
◼ You need to make more than $30 to pay for that broken window.
Graphing Inequalities – what do you see?
a > 5
b ≤ 3
Versus
How to Graph: Make sure your variable is listed first.
◼
Now does this make more sense?
a > 5
b ≤ 3
Versus
Solving Inequalities
*There are only two reasons you should flip the inequality symbol:
1) You multiply or divide by a negative number.
2) You flip then entire phrase.
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