Absolute Value and Opposites

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Presentation transcript:

Absolute Value and Opposites Algebra 1 Unit 2: Real Numbers

Absolute Value Absolute value means the distance away from zero on a number line. Will distance ever be negative? An absolute value function will never be negative.

Absolute Values Evaluate the following absolute value expressions. │5 + 4│ 3 – │4 – 9 │ │- 5 – 11 │ - │7 – 22 │

Opposites Every number has an opposite. On the number line, a number and it’s opposite are OPPOSITE each other. They are the same distance from zero, but they are on opposite sides of the number line.

Opposites Example of opposites:

Opposites An opposite can be found by multiplying the ENTIRE EXPRESSION by -1. What is the opposite of the following numbers? 9 -3 4.25 -.5