On a number line, the distance from zero to -7 is 7 units. which equation demonstrates this concept? a. |-7| = 7 b. |-7| = -7 c. 72 = 49 d. 0 + 7 = 7

Option A. |-7| = 7

Solution:

The distance is a positive value, then we must not take in account the sign, and using:

|a| =-a if a<0

with a=-7

|-7| = -(-7)

|-7| = 7