A dolphin was swimming 4 feet below sea level. The number line shows the location of the dolphin. It then dove down 3 feet. Describe how to use the
number line to find the new location of the dolphin
-10 9 8 7 6 5
0
2
8
9 10
A. On the number line, move 3 units to the right. End at -1. The
dolphin was 1 foot below sea level.
O B. On the number line, move 3 units to the left. End at 1. The dolphin
was 1 foot above sea level.
C. On the number line, move 3 units to the right. End at 7. The dolphin
was 7 feet above sea level.
O D. On the number line, move 3 units to the left. End at -7. The dolphin
was 7 feet below sea level.