Variation

We started the day by looking at the graphs for both our M&M data, as well as the Starbucks data. Make sure you know how to plot data on your calculator, find the regression line, and understand how to put that information back into the context of the problem. This material WILL be on the midterm.

We discussed 4 different types of Variation: Direct, Inverse, Exponential, and Joint. Be sure that you know the equations and standard shape of these relationships. If you still have questions, check out the links to the right.

Have a great weekend!

GO HEELS!!! Check out Late Night With Roy at Tarheelblue.com this weekend

Coming up:
- Homework: pg. 109 #'s 9, 11, 12, 39-44, 68
- Midterm next week!

Posting for Points:
Which school will have the best college basketball team this year????? (There is only one answer)

M&M Data

Today you guys split up into groups and took data on 10 fun size bags of M&M's. You should have taken data on several variables including: weight of bag, # of M&M's per bag, # of each color, etc.

In class you completed a set of questions dealing with the graph of the Weight vs. # in each bag, and found the regression line for this data. We will discuss this data tomorrow, and use the Starbucks data to create another plot.

Coming up:
- No Homework for tonight, unless you did not finish your Graph in class
- Midterm next week!

Posting for Points:
What does the correlation coefficient tell us about a graph?

Test (Transformations and Inverse Functions)

Today was your third test!! Hopefully everyone thought they did well! You will get them back as soon as everyone has taken the test.

Coming up:
- Tonight you should rework the problem that was one the board at the end of class
- Be sure you have your Starbucks data with you tomorrow (just the table)

Posting for Points:
What did you think of the test?

MATHO and Test

Today we played a review game preparing for the Test tomorrow. Review all of your notes (library of functions, rules for functions/transformations, etc.) and be sure that you work out a few more problems. Also, as discussed in class, be sure to remember your parentheses when needed (especially when working with composite functions). DISTRIBUTE THE NEGATIVE!!!

Good luck studying!

Coming up:
- Test tomorrow!!!
- Midterm next week! (We will talk about this on Thursday)

Posting for Points:
What do you think is the best way to study for a math test?