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lelebaby lelebaby
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12 years ago
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 (?Consumer price index,? 2006). Use the coordinates (1997, 1.26) and (2006, 2.31) to find the slope, or rate of change, between the two points. Describe how you arrived at your answer.
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#1
12 years ago
Slope = (y2-y1)/(x2-x1)
(1997,1.26) (2006,2.31)

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

= 1.05/9

= .1166

Or approx. .12 .  This represents an increase of $1.05 over 9 years, which is about .12 dollars or
12 cents per year

Hoping this helps!
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finalgurl90finalgurl90
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#2
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12 years ago
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