The director of an alumni association wants to determine whether there is any type of relationship between the amount of an alumni's contribution (in dollars) and the number of years the alumnus has been out of school. Based on the data below, decide if the correlation between the number of years and amount of the contribution is significant at the alpha value of 0.05.

Years (x)	1	3	5	10	6	9
Contribution (y)	640	290	170	45	70	80

a) Determine the line best of best fit y = a + bx.

b) When x = 8 what is y and what does it mean in this context?