Least Squares Fitting

Best Linear Fit to a List of Points
in the Least-squares Sense

The data file you submit should be text file with two numbers on each line, separated by a spaces or a tab, such as

1.2	3.3
1.8	5.6
2.3	7.8
3.3	8.6
4.6	10.9
7.2	12.4
8.9	13.1
...