Answer:
A) I would create a vertical number line, seeing the numbers bottom from the upper the number line would start in the dolphin cause is the last “thing” that the passenger saw below the boat which means is a negative point (-3.4), the next point, also a negative one (-1.2), would be located in the fish cause is up the dolphin and below the boat and the “zero” point would be where the passenger is, finally I would put a point in the bird, this point would be positive (1.2) because is above the passenger
B) The zero represents the origin on the number line, the reference point
C)
The oppsoite numbers are the distance between the passenger and the bird, with the distance between the passenger and the fish
-1.2 is the opposite of 1.2