The value of N is a distance of two units from -1 on a number line which numbers could be the value of N

The absolute value of a number n is denoted by |n|.

It is defined as the distance between 0 (zero) and n (the number) on the number line.

Importantly, the absolute value of any nonzero number is always positive.

For example, |1.5| = 1.5 and |−1.5| = 1.5.

Both 1.5 and −1.5 have the same absolute value of 1.5, because 1.5 is 1.5 units from 0 (to the right) on the number line and −1.5 is 1.5 units from 0 (to the left).

Thus, |−n| = |n| for any nonzero number n, and |0| = 0