Answer: Negative linear association
Step-by-step explanation:
From the given data it can be seen that as the value of x increasing , the values of y decreasing.
Thus there must be a negative association between the variables.
Also, the rate of change of Zoo Ticket Price with respect to the the number of persons:

We can see that the rate of change of -0.5 Ticket Price per person is constant.
Since m is negative and constant.
Therefore, there must be negative linear association.