Question

A groundhog crawls out from a hole 3 feet below the surface of the ground. Joan wrote −3 feet to represent the depth from which the groundhog crawls out. What does 0 represent in this situation?
the surface of the ground
the distance the groundhog crawled
the height above the surface of the ground
the level from which the groundhog crawled out

Answer 1

-3 veut dire que la marmotte est descendue à - 3 m donc  0 représente la surface du sol.

Answer 2

0 represents ground level...the surface of the ground...and anything below it will be negative, just like everything above it will be positive