In 2001 there were 6680 electric powered vehicles in use in the United States. In 1998 only 4760 electric vehicles were being used. (Source: U. S. Energy Information Administration) GRE
a. Assume that the relationship between time, x, and number of electric powered vehicles, y, is linear. Write an equation in slope-intercept form describing this relationship. Use ordered pairs of the form tyears past 1998, number of vehicles)
The equation is y - 640x 4760. (Type your answer in slope-Intercept form)
b. Use this equation to predict number electric powered vehicles in use in 2004
vehicles
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