Author 
Topic 

jonesbetty
Junior Member
USA
5 Posts 
Posted  11/08/2011 : 09:29:18

the linear equation y=0.15x+0.79 represents an estimate of the average cost of gas for year x starting in 1997. The year 1997 would be represented by x=1, for example because it is the first year in the study. similarly, 2005 would be year 9 or x=9. a) what year would be represented by x=4 b) what xvalue represents the year 2018 c) what is the slope or rate of change of this equation d) what is the yintercept e) what does the yintercept represent f) assuming the growth trend continues, what will the price of gasoline be in the year 2018? How did you arrive at your answer? 


royhaas
Moderator
USA
3059 Posts 
Posted  11/09/2011 : 08:10:47

Read the posting rules. 


the_hill1962
Advanced Member
USA
1469 Posts 
Posted  11/09/2011 : 11:44:34

It is quite hard to believe that you can't even take a stab at the answer to part a. 1997> x=1 1998> x=2 1999> x=3 and so on... Part b is also as easy. Part c, d and e need you to find out the information that I was suggesting in your other posts. Part f will seem easy after you do all these other things. 



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