Which statement is true about Calvin's score during the tournament?

Use the graph of the sine function y=2sinθ shown below

The random variable x is the number of occurrences of an event over an interval of ten minutes. it can be assumed that the probability of an occurrence is the same in any two-time periods of an equal length. it is known that the mean number of occurrences in ten minutes is 5.3. the appropriate probability distribution for the random variable

How do you determine whether a relationship represented as as graph is linear or nonlinear