hello

- anonymous

hello

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- chestercat

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- bahrom7893

hiya!

- anonymous

hi

- bahrom7893

u have a question?

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## More answers

- anonymous

can you help me? Im stuck on a math problem for school...

- bahrom7893

post the question here, and i hope its not due tmorrow plz, i gotta go to bed too lol

- anonymous

Manufactures are installing fewer smaller rims in favor of larger rims. One advantage of bigger rims is that they are better for braking. The following table lists the increase in 16 inch rim sales as a percentage of new vehicle sales for selected years from 1996 to 2002.
Sales of 16 inch rims
Year 1996, 1998, 2000, 2002
Percentage 28, 36, 43, 51
1)Plot the data in a scatter plot
2)Calculate the slope between consecutive points in the table. Intercept each slope.
3) Find the equation of a line that models the data. (Hint: you may want to use the point- slope form, y-y1=m(x-x1))
4)Does your line model the data exactly? Could a line model these data exactly? explain
5)Use your equation to write a function P that models these data.
6) Evaluate P (1999) and intercept your results.

- anonymous

I dont need the whole problem. I only need # 5.
I cant figure out what function P means...

- bahrom7893

u know how ur line is y-y1=m(x-x1), just solve it for y and that will be ur function P

- bahrom7893

That's it

- anonymous

Thats what Im stuck on

- bahrom7893

post the equation that u got

- anonymous

how do I know what to put in for y and y1 and stuff?

- bahrom7893

run the linear regression

- anonymous

Well, Im not really sure what I got. I plotted the info on a graph. Then I determined the intercepts somehow, but I dont know if they are right. Im sorry, Im so stupid with this stuff.

- bahrom7893

can i just post the answers?

- anonymous

between 28-36 i got 2/4 or 1/2

- anonymous

Thts fine. Its a team assignment, so I only need number 5. I just cant figure out how to get there.

- anonymous

i have been working on this one problem for 4 hours now...

- anonymous

hello? Are you still here? Anyone? Please..

- bahrom7893

i am

- bahrom7893

workin on it

- anonymous

oh, Im sorry. Thank you so much for your help. I am so frustrated and tired.

- bahrom7893

so am i, okay ill just use:
x = 1996
x1 = 2000
y = 28
y1 = 43

- anonymous

okay...

- bahrom7893

M = (28-43)/(1996-2000)

- bahrom7893

M = -15/-4 = 15/4

- bahrom7893

y - 43 = (15/4)*(x - 2000)

- bahrom7893

y = 15x/4 - 7500+43

- bahrom7893

y = 15x/4 - 7457

- bahrom7893

P(x) = 15x/4 - 7457
P(1999) = 39.25 (plug in 1999 instead of x)

- bahrom7893

Please click on become a fan if I helped, thanks!

- anonymous

Thank you so very much!! Im still not too sure how I explain it, but it has helped me somewhat understand it!

- bahrom7893

ur welcome!

- anonymous

are you on this a lot? I may have more question next week?

- anonymous

what was ur answer on question 3 of this problem

- anonymous

cos i have the same problem to tackle

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