## 5/21/15 Algebra 2

Agenda

1. We have a Skills Test today

• As always, you can have a quarter sheet of paper for reference.
• You can also use your green Conics reference sheet.
• Please stay quiet until all tests are turned in.
• Time is minimal, so start right away.

2. Some dates to know

• Notebook Quiz: 5/28-29
• Return textbooks: 5/28-29
• Final Skills Test: 5/28-29

I will give you your final review on Tuesday.

## Algebra 2 5/1/15

Agenda (5/1)

Today is the last day to turn in any late homework to me!

Do I have a volunteer to get the Green Laptop cart?  And I will need someone to take it back (with about 5 minutes to go in the period)

1. Skills Test
Please make sure you meet expectations.

Remember to stay quiet until all tests are turned in.  Thank you.

2. Graph Rational Functions Exploration 1

Feel free to start on this when you finish your skills test.

Remember where the graphing calculator is?  www.mrdavisonline.com -> Algebra 2 -> scroll down!

Get this done today.  We will be moving on to a new form of rational functions on Monday.

## CAASPP Practice

Let’s look at the Math Performance Test all 11th graders will take this year.

Notice you have two panes.  The pane on the left has the information.  The place for you to enter your answers is in the pane on the right.  Please go through the work and fill out as many questions as you answer.

1 Part A
This is a graph. Can you create it on the web page?

2 Part B

3 Part C

4 Part A
This is a graph. Can you create it on the web page?

5 Part B

6 Part C

7

## Algebra 2: 2/23/15

I know some of you are behind.  I do expect my students to do the work daily even though I don’t collect the work daily.  Make sure you are working hard in class.  It makes your work outside of class easier.  We meet for about 4.5 hours a week.  Time in class is precious.  Make sure you are focused and on-task in class.

If you cannot state the domain of power functions then you are behind.  Look at these notes.

Today you will be looking at inverse functions of power functions.  It builds upon your work from last time, where you looked at inverse functions of linear functions.  Remember the 3 steps needed to find an inverse function (they are listed at the top of Inverse Functions Exploration 1).  Remember about the “switch x and y” idea… and how it shows up in the table and on the graph.  And remember your result for function composition.

If f and g are inverse functions, then

f(g(x))=x and g(f(x))=x

You will first find inverse functions of power functions.  Remember your exponent rules.  Next, I will give you some points on the graph of f.  Know, knowing what you know about inverse functions, can you state some points on the graph of g?  Then algebraically verify the points are on the graph of g.  Just substitute the x value into the function and make sure the output (y-value) is what you expect.

If (x,y) is on a graph, then g(x)=y

For instance, if I have a point (12,2) on a graph, then g(12)=2.

Then you get to show that f(g(x))=x and g(f(x))=x.  Show all steps.  Yes, we know what the result is supposed to be (if you found g correctly).  So make sure you can show it algebraically.

And here are the solutions to the first page.  You have 3 pages to do on your own.

A reminder… I routinely tell people that I get to teach the best kids in the school.  Today you get to show that.  I have high expectations.  Please  meet them.  Thank you.

## Matrix Calculator

Go to http://www.mathsisfun.com/algebra/matrix-calculator.html (this is also under Algebra 2 Resources on my webpage).

• Your Matrix A will be your transformation matrix T. Use the sliders to adjust the dimensions of the matrix and enter your values.
• Do the same thing for matrix B (which will be your matrix of vertices, U)
• Click the AB button. That will do the multiplication .