3.1 · AlgebraLesson 1 of 12Free preview
The modulus function
|x| is the distance of x from 0, so it is never negative: |−4| = 4 and |4| = 4.
3.1 · AlgebraLesson 1 of 12Free preview
|x| is the distance of x from 0, so it is never negative: |−4| = 4 and |4| = 4.