How do I find the linear formula for f(x) for this set of data? It says round numbers to three decimal places.
And what does the regression line mean?

Year Height (ft)
1900 10.83
1904 11.48
1908 12.17
1912 12.96
1920 13.42
1924 12.96
1928 13.77
1932 14.15
1936 14.27
1948 14.1
1952 14.92

1956 14.96
1960 15.42
1964 16.73
1968 17.71
1972 18.04
1976 18.04
1980 18.96
1984 18.85
1988 19.77
1992 19.02
1996 19.42

Question

How do I find the linear formula for f(x) for this set of data? It says round numbers to three decimal places.
And what does the regression line mean?

Year	     Height (ft)
1900	     10.83
1904	      11.48
1908	      12.17
1912	      12.96
1920	      13.42
1924	       12.96
1928	       13.77
1932	       14.15
1936	       14.27
1948	       14.1
1952	       14.92

1956	       14.96
1960	       15.42
1964	       16.73
1968	       17.71
1972	      18.04
1976      18.04
1980	       18.96
1984	       18.85
1988	      19.77
1992	      19.02
1996	      19.42