We have been given a table which lists some of the characteristics of the houses on Katrina’s street.
There are four different relation choices are given. now we have to identify which relationship describes a function.
We know that relations are written usually in ordered pairs (x,y) and a relation can be function only if x-value doesn't repeat.
So we just have to find which of the given ordered pair choices has no repeated x-value in the table.
We see that only "Appraised value" has no repeated value in the table. Hence 4th choice <u>(appraised value, property tax) </u>is the correct answer.