St. Louis Arch

Today we talked about quadratics some more, and specifically focused on how to find the equation if given only the graph. You should now be able to also apply these concepts to a word problem.

Tonight for homework you must determine the equation (a quadratic) representing the St. Louis Arch using the picture provided in class. Use our word problems from class to help you set up the equation.

Have a great night!

Coming up:
- Homework: Find the equation representing the St. Louis Arch
- We will begin looking at matrices tomorrow

Posting for Points:
Where is the St. Louis Arch?

Quadratics (x-intercepts)

Today we finished talking about quadratics, specifically about how they move, and how to find the equation using two points from a graph. If you were not in class you definitely need to get some notes from someone, but you can check out the examples on pages 131-134. We focused on finding the x-intercepts and solving for "a" in the equation f(x)= a (x-h)^2 + k.

Let me know if you are still confused (when you post your comment) and I will post some examples tonight.

I checked homework today so if you were not in class today you must show it to me tomorrow!

Have a great week!

Coming up:
- HW pg. 135 #'s 36-42 even, 78, 79, and find the x-intercepts from last nights homework (14-24)
- Tomorrow we will look at using Matricies to solve quadratics

Posting for Points:
From the standard equation of a quadratic, what do h and k tell you?

Quadratic

Today we focused on the specifics of a Quadratic function. We talked about both the "normal" equation and the standard equation. Be sure that you know how to use each, and how to change from one type to the other. You should also know what the vertex and the axis of symmetry are in a quadratic function. If you missed the notes today get them from someone ASAP.

Have a great week!

Coming up:

- Homework p. 134 #'s 9, 14-26, even 77

Posting for Points:

What is the equation for finding the axis of symmetry?

Midterm Grades

Today I returned your midterms. Overall they were very good. We spent part of class going over the answers and correcting them. Be sure you understand all of these concepts.

Have a great weekend!

Coming up:
- We will start looking specifically at quadratics on Monday

Posting for Points:
What is the UNC mascot?

Study for Midterm

Study for your MIDTERM!!!! Good Luck!! Study Hard!!

Coming up:
- Midterm Tomorrow!!

Posting for Points:
Enjoy a free posting point!! (tell me how excited you are if you want)

Midterm Review

Today we went over the homework from Monday and reviewed for the Midterm. Be sure that you are studying your old tests and correcting any mistakes you made.

Coming up:
- Midterm this THURSDAY!!! We have moved it from the original date (Friday).

Posting for Points:
When is your Midterm now? (sorry for the date changes but this should benefit everyone)

Problem Solving

We started today by reviewing the problems you had for homework dealing with the different types of variation. Be sure you know how to find the regression line using your calculator and understand what it is used for (and how to use it).

I also handed back your tests from last week. Overall they were very good! Another job well done. Be sure to review ALL of your test material for the midterm this Friday!

We also looked at some Problem Solving situations using the material from the last chapter. You should have problems 1-7 (skip 3 and 5) done for class tomorrow.

Have a great week!

Coming up:
- Homework: p. 125 #'s 1-7 (skip 3 and 5)
- Midterm this FRIDAY!!!!!!

Posting for Points:
What is the Regression Line used for in a scatterplot?