Absolute value makes a negative
Positive numbers and 0 are left unchanged. The absolute value
of x is
written |x|. We write |–6| = 6 and |8| = 8.
the absolute value of a number is the distance between the
number and the origin. This is
a much more powerful definition than the "makes a negative number
positive" idea. It connects the notion of absolute value to the
of a complex number and the magnitude
of a vector.