Question

2. Examine the rise in gasoline prices from 2006 to 2009. The average price of regular unleaded gasoline in January 2006 was $2.31 and in January 2009 the average price of regular unleaded gasoline was $3.42. a. a. Use the slope formula to find the rate of change of the gasoline prices between 2006 and 2009. Show your work or explain. b. b. When graphing, assume x = 0 represents the year 2006. What is the trend you observe in the gas prices from 2006 to 2009? c. The average price of gas remained at the same rate of $3.42 in January 2009 and in January 2010. What typ

Answer 1

The slope is rise/run.

\[m=(y _{2}-y _{1)/}(x _{2}-x _{1})\]
So you would have (3.42-2.31)/(9-6)=.37

So your slope is .37

The price changed 37 cents per year.

The trend is that the price is rising.

Answer 2

Here's a graph.

Answer 3

Thank you! on the slope where did you get 9-6?

Answer 4

I didn't follow the directions very well. Your problem states to use \[x _{1}=0\]for 2006. So \[x _{2}=3\] for 2009.

I let \[x _{1}=6\]for year 2006 and \[x _{2}=9\] for the year 2009

Answer 5

Does that help?