A scatter plot is shown with a line of fit sketched through the data. A scatter plot contains the ordered pairs (1,5), (2,5.5), (2,7), (3,4), (5,5), (6,3), (7,2), (8,4), (9,3), and (10,1.5). A linear function is drawn through the ordered pairs (0,7) and (8,3). Choose the set of coordinates that would best be used to calculate the slope of the line of fit.
1) (2, 6) and (10, 2)
2) (1, 5) and (10, 2)
3) (1, 5) and (10, 4)
4) (2, 6) and (10, 4)