We make a table. it shows this scatterplot. Now, assume I the graph is degree 6. just plot the degree 6 polynomial formula You see R^2 is = 1. This is 100% accuracy. It also tells you what the numbers are. a = 0.0210704

and this is the graph:

Requires all terms

now, see if I remove the g, any of the terms, it breaks. The graph looks like shit the stats are bad too.