ABSOLUTE+VALUE

IaI = IaI is the distance between the graph of the number a and the origin (0).
 * ABSOLUTE VALUE **- For each real number a:
 * a if a > 0
 * 0 if a = 0
 * -a if a < 0

I4I= 4 I-4I= 4 -5 I-4-1I = -5× 5= 25