Katherine P. answered • 07/31/13
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Those lines are telling you to take the absolute value of what's inside.
|-3| = 3
|4| = 4
|-12| = 12
Beth P.
asked • 07/31/13negative numbers
what is the function of a negative number appearing within 2 lines?
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Mike C. answered • 07/31/13
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Absolute value (distance from zero on the number line).
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