Scatter plots and least square lines.

The number of home runs hit by a player.
1990 1991 92 93 94 95 96 97 98 99
39. 22. 42 9. 9. 39 52 58 70 65

Find the equation of the least square line? Y=4.9x+18.5
Find the correlation, r, to the nearest hundredth? 0.68

Use the least square line to predict the number of home runs the player hits in 2000. Can't figure this one out. Thanks