Question

Xavier climbs 9ft up into an apple tree what integer represents the directions and how far he will climb to get back down to the ground what does the integer 0 represent the situation

Answer 1

Direction is represented by +9, indicating that is moving in a positive direction (upwards).

Zero is the reference point.

Explanation:

So, basically, we need to apply a reference system to express directions, because all movements are represented respect to a reference point. In this case, number zero represents that reference point, which is located in the ground, setting this reference point we can measure the distance that Xavier traveled upwards the apple tree.