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 3 years ago
3. The linear equation
represents an estimate of the average cost of gas for year x starting in 1997 (“Consumer price index,” 2006). 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 this growth trend continues, what will the price of gasoline be in the year 2018? How did
 3 years ago
3. The linear equation represents an estimate of the average cost of gas for year x starting in 1997 (“Consumer price index,” 2006). 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 this growth trend continues, what will the price of gasoline be in the year 2018? How did

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myininaya
 3 years ago
Best ResponseYou've already chosen the best response.0how did you get that without an equation? I would just say these questions cannot be answered since there was not enough information given.

1honey
 3 years ago
Best ResponseYou've already chosen the best response.0im sorry the equation is y=0.5x+0.79

myininaya
 3 years ago
Best ResponseYou've already chosen the best response.0so for the first one you plug in x=4 correct?

myininaya
 3 years ago
Best ResponseYou've already chosen the best response.0oh since x=4, then the year is 2000 ok gj now for b....

myininaya
 3 years ago
Best ResponseYou've already chosen the best response.0so x=1 we have 1997 x=2 we have 1998 x=3 we have 1999 x=4 we have 2000 and so on.. so the equation for the year would be Z=1996+x lets see for x=1, we get Z=1996+1=1997 for x=2 we get Z=1996+2=1998 and so on... so the question is what is x if Z=2018 so we have 2018=1996+x solve this equation for x

myininaya
 3 years ago
Best ResponseYou've already chosen the best response.0what did you get when you solved the equation that i just typed for x?

myininaya
 3 years ago
Best ResponseYou've already chosen the best response.0ok cool so did you understand everything for b?

1honey
 3 years ago
Best ResponseYou've already chosen the best response.0no not really by u breaking it down help me find the answer

myininaya
 3 years ago
Best ResponseYou've already chosen the best response.0I just made up a variable for the year

1honey
 3 years ago
Best ResponseYou've already chosen the best response.0can we do the next one c

myininaya
 3 years ago
Best ResponseYou've already chosen the best response.0k it wants to know the slope of the line? what is the slope of any line in this form y=mx+b?

myininaya
 3 years ago
Best ResponseYou've already chosen the best response.0so y=.5x+79 has slope_________?

1honey
 3 years ago
Best ResponseYou've already chosen the best response.0oh ok the slope is .5 and would b=79

1honey
 3 years ago
Best ResponseYou've already chosen the best response.0or the answer to the ? is just .5

myininaya
 3 years ago
Best ResponseYou've already chosen the best response.0the question c is just looking for slope so it would be .5 the question d is just looking for the y intercept so it would be .79 (I forgot the decimal when I typed it a sec ago)

1honey
 3 years ago
Best ResponseYou've already chosen the best response.0therefore the yintersect would b =0

myininaya
 3 years ago
Best ResponseYou've already chosen the best response.0the yintercept is when x=0

1honey
 3 years ago
Best ResponseYou've already chosen the best response.0than im lost on problem e

myininaya
 3 years ago
Best ResponseYou've already chosen the best response.0ok we will come back to it then lets look at the last one average gas is y=.5x+.79 and since we are looking at yr 2018 then x=22 so the average gas for yr 2018 is y=.5(22)+.79

myininaya
 3 years ago
Best ResponseYou've already chosen the best response.0ok back to e. the yintercept is when x=0 because if we were to graph a point on the y axis x would always be zero since we aren't going left and right any from the origin. for example graph (0,5) and (0,6). where are these points?
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