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 x-value represents the year 2018 c) what is the slope or rate of change of this equation d) what is the y-intercept e) what does the y-intercept 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?
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.