The scatterplot shows the federal minimum wage rates in the United States, calculated every five years from 1970 (year 1 on the graph) to 2005 (year 8).

Which is the best equation of the trend line for the scatterplot?

A. [tex] y = -0.45x + 1.55 [/tex]
B. [tex] y = -0.45x - 1.55 [/tex]
C. [tex] y = 0.45x + 1.55 [/tex]
D. [tex] y = 0.45x - 1.55 [/tex]