Thread: Using a TI-83+, how can I find the models for these plots?

I plotted these on my TI-83+, but how do I go about finding the linear, quadratic and exponential models for these points? Thanks in advance.

Here are the points:
x y
1 14 000
2 9100
3 6200
4 4000
5 3000

Originally Posted by Pupil

I plotted these on my TI-83+, but how do I go about finding the linear, quadratic and exponential models for these points? Thanks in advance.

Here are the points:
x y
1 14 000
2 9100
3 6200
4 4000
5 3000

http://www.pstcc.edu/facstaff/jahren...or/stats83.pdf

Originally Posted by skeeter

http://www.pstcc.edu/facstaff/jahren...or/stats83.pdf

Thanks for this, Skeeter. Just one question, does a unit circle come with the calculator or do we have to add it? And how would I go about doing it?

Originally Posted by Pupil

Thanks for this, Skeeter. Just one question, does a unit circle come with the calculator or do we have to add it? And how would I go about doing it?

you would have to add it.

do some research ... TI's website may have a flash app you can buy or you can also try TIcalc.org for a possible free program. you need a connect cable + the software to download.