Got Homework?
Connect with other students for help. It's a free community.
Here's the question you clicked on:
 0 viewing
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 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 years ago

This Question is Closed

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

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

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

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

myininayaBest ResponseYou've already chosen the best response.0
so 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
 3 years ago

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

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

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

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

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

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

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

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

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

myininayaBest ResponseYou've already chosen the best response.0
the 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)
 3 years ago

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

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

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

myininayaBest ResponseYou've already chosen the best response.0
ok 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
 3 years ago

myininayaBest ResponseYou've already chosen the best response.0
ok 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?
 3 years ago
See more questions >>>
Your question is ready. Sign up for free to start getting answers.
spraguer
(Moderator)
5
→ View Detailed Profile
is replying to Can someone tell me what button the professor is hitting...
23
 Teamwork 19 Teammate
 Problem Solving 19 Hero
 Engagement 19 Mad Hatter
 You have blocked this person.
 ✔ You're a fan Checking fan status...
Thanks for being so helpful in mathematics. If you are getting quality help, make sure you spread the word about OpenStudy.