For the set of data below, find the line of best fit.
x -2 -1 0 1 2
y 7 6 3 2 0



a. y = -1.8x + 3.6
b. y = -0.54x + 1.95
c. y = 3.6x - 1.8
d. y = 1.95x - 0.54
e. None of the others