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Algebra 1 Notes: Lesson 2-1 Rational Numbers on the Number Line
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Vocabulary Natural Numbers
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Vocabulary Natural Numbers {1, 2, 3, …} Whole Numbers
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Vocabulary Natural Numbers {1, 2, 3, …} Whole Numbers {0, 1, 2, 3, …}
Integers
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Vocabulary Natural Numbers {1, 2, 3, …} Whole Numbers {0, 1, 2, 3, …}
Integers {…, -2, -1, 0, 1, 2, …}
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Rational Numbers Anything that CAN be written as a fraction. Integers
Fractions Decimals
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Example 1 Name the coordinates of the points graphed on the number line. {-7, 1, 6}
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Example 2 Name the coordinates of the points graphed on the number line. {8, 9, 10, …}
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Example 3 Graph the following set of numbers on a number line:
{integers less than -6 or greater than or equal to 1}
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Example 3 Graph the following set of numbers on a number line.
{integers less than -6 or greater than or equal to 1}
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Example 3 Graph the following set of numbers on a number line.
{integers less than -6 or greater than or equal to 1}
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Example 3 Graph the following set of numbers on a number line.
{integers less than -6 or greater than or equal to 1}
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Example 3 Graph the following set of numbers on a number line.
{integers less than -6 or greater than or equal to 1}
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Vocabulary Absolute Value
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Vocabulary Absolute Value Distance from 0
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Example 4 Find each absolute value. |0.25| 0.25 b) |-¾|
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Example 5 Evaluate: |y – 8| + 5 if y = 12 |12 – 8| + 5
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Example 5 Evaluate: |y – 8| + 5 if y = 12 |12 – 8| + 5 |4| + 5
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Example 5 Evaluate: |y – 8| + 5 if y = 12 |12 – 8| + 5 |4| + 5 4 + 5
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Example 5 Evaluate: |y – 8| + 5 if y = 12 |12 – 8| + 5 |4| + 5 4 + 5 9
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Example 5 Evaluate: |y – 8| + 5 if y = 12 |12 – 8| + 5 |4| + 5 4 + 5 9
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Try on your own |2 - x| x = 5
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Try on your own |2 - x| - 7 x = 5 Can it be negative???
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Assignment Pg. 71: 18-56 (even) and 57
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