correlation is how closely they fit together
the closer to -1 or 1 it is, the closer they fit to the best fit line
-1 would be as 1 increases, the other decreases (negative slope)
1 would be as 1 variable inceass, the other also increases (positive slope)
a perfect correlation one would have all the points on the best fit line
in the problem, it is not perfect
as x increases, y decreases
moderate negative assoation
