scatter plot plane titled Sleep Study with the x axis labeled age in years and the y axis labeled time in hours, with points at 1 comma 14, 2 comma 14, 3 comma 13, 4 comma 12 and a half, 5 comma 12, 6 comma 12, 7 comma 10, 7 comma 11 and a half, 8 comma 8, 8 comma 10, 8 comma 12, 9 comma 10, 9 comma 11, 10 comma 8, 10 comma 10, 12 comma 8, 13 comma 8, 15 comma 9, 15 comma 10, and 16 comma 7 and a half

Which of the following describes the pattern of association between the variables, based on the graph?

There is a positive linear association.
There is a positive nonlinear association.
There is a negative linear association.
There is a negative nonlinear association.