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examine the rise in gasoline prices from 1997 to 2006. the price of regular unleaded gasoline in january 1997 was $1.26 and in january 2006 the price of regular unleaded gasoline was $2.31 (bureau of labor statistics,2006) use the coordinates (1997,1.26) and (1997, 1.26) and (2006, 2.31) to find the slope or rate of change) between the points. describe how you arrived at you answer.

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    The slope can be found by (y1 - y2) / (x1 - x2)

    (1.26 - 2.31) / (1997 - 2006) = 0.117

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