Task# Foxes and Rabbits

Illustrative MathematicsVaries

There is a natural (and complicated!) predator-prey relationship between the fox and rabbit populations, since foxes thrive in the presence of rabbits, and rabbits thrive in the absence of foxes. However, this relationship, as shown in the given table of values, cannot possibly be used to present either population as a function of the other. This task emphasizes the importance of the 'every input has exactly one output' clause in the definition of a function, which is violated in the table of values of the two populations.