The integer 4 is 4 units from 0 on the number line. Which integer is also 4 units from 0 on the number line? How is this integer related to the integer 4?
The integer −4 is 4 units from zero. Because absolute value measures the distance from zero, | − 4| = 4. The integer 4 is also 4 units from zero. Again, absolute value measures the distance from zero, so |4| = 4.
