Absolute value equations and inequalities_Alg
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Absolute Value The absolute value of any number n is its distance from zero on a number line and is written as |n|.
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Transcript of Absolute value equations and inequalities_Alg
Absolute Value
The absolute value of any number nis its distance from zero on a number line and is written as |n|.
1. If |x| = n, then x = -n AND x = n
This is true because the symbol |x| means x is the distance of n away from zero, both in the
positive direction and in the negative direction.
1. If |x| <n, then x<n and x> -n.
This is true because if x is the distance of n away from zero, this is an AND inequality that was studied in the last section. In other words, x
is all the possible numbers in between –nand n.
3. If |x| >n, then x>n and x< -n.
This is true because if x is n distance away from x, then x would be outside of –n and n on the
number line.