warmup: page 100 >,
TRANSCRIPT
Writing and Graphing Inequalities Introduction.notebook
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WarmUp: Page 100
Use the symbols above and answer the following questions.
1) 45 ____ 32 2) 52 + 63 _____ 108
3) 42 + 40 ___ 82 4) 16 ____ 2 x 2 x 2
>,<, =
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Graphing Inequalities
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Inequality
An inequality is a mathematical sentence that contains >,<,≥, ≤, or, ≠.
Writing and Graphing Inequalities Introduction.notebook
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Solution to an Inequality
Any number than makes an inequality true is a solution to an inequality.
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Symbol Description
less than or equal to
greater than or equal to
greater than
less than
not equal to
≤
≥
≠
>
<
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Writing Inequalities:
Look for key words
Greater Less than
Maximum no more than at least
more than minimum
> < ≥ ≤
> <
≤ ≤ ≥
> ≥
Writing and Graphing Inequalities Introduction.notebook
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Let's Try Some......More than 3,500 people attended the convention
Her earnings were no more than $64
A savings account balance is now less than 550
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Practice Time:
Writing Inequalities
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NOW after we write our inequalities it is time to graph on a number line ...........
10
23
45
67
89
10
12
34
56
78
910
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10 2 3 4 5 6 7 8 9 1012345678910
Closed Dot = number is included in the solution
Open Dot = that number is not included in solution
All numbers to the left of the number are in the solution
All numbers to the right of the number are in the solution
Let's Try some..... ________
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Graph the solution to the inequality on the number line:
y < 3
10 2 3 4 5 6 7 8 9 1012345678910
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Graph the solution to the inequality on the number line:
t ≤ 8Hint: A closed circle indicates less than or equal to.
10 2 3 4 5 6 7 8 9 1012345678910
Writing and Graphing Inequalities Introduction.notebook
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Graph the solution to the inequality on the number line:
m ≥ 7
10 2 3 4 5 6 7 8 9 1012345678910
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Graph the solution to the inequality on the number line:
v is greater than 2
10 2 3 4 5 6 7 8 9 1012345678910
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Graph the solution to the inequality on the number line:
x
10 2 3 4 5 6 7 8 9 1012345678910
= 5
≠
Writing and Graphing Inequalities Introduction.notebook
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Graph the solution to the inequality on the number line:
x
10 2 3 4 5 6 7 8 9 1012345678910
≠ 5
≠
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Using a Number Line
x 1
10 9 8 7 6 5 4 3 2 1 0 1 2 3 4 5 6 7 8 9 10
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Practice Time:
Graphing Inequalities
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HOMEWORK:
INEQUALITIES WORKSHEET (FRONT AND BACK)
TENMARKS DUE FRIDAY