Absolute Value

What's a way to define absolute value?

• The value of a number
• The opposite of a number
• The distance of a number from zero
• The multiplicative inverse of a number

-|20 - 6|

• 14

• -14

• 26

• -26

• All real #s

What is the reason that absolute value is always written as a positive?

• Absolute value is talking about numbers so it must be positive.
• Absolute value does not always have to be positive.
• Absolute value is like a clock it has only positive numbers.
• Absolute value is talking about distance, distance is always measured by positive numbers.

Choose the equation that best matches the graphed function.

Choose the graph that matched the equation.
y = |x - 1|

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Evaluate: |0|

• 0

• -0

• +0

• There is no answer

Solve:
|x + 4| + 8 > 2

• x < -3 and x > -5/3
• x < -3 and x > -4
• all real numbers
• no solution

Solve:
|x + 4| - 8 > 2

• x > 6 and x < 10
• x > 6 or x < -14
• all real numbers
• no solution

Correct or incorrect?

• Correct

• Incorrect

Tags

CCSS.HSA.REI.B.3