Thursday 10/31

We have a test tomorrow!

Homework#42: Preview Test 12
Solutions

Wednesday 10/30

Today we rolled up our sleeves and dove headfirst into the quadratic formula with Notes #15. This is now the fourth different technique we've learned to solve quadratic equations, and you need to be able to handle all four proficiently.

We'll also be having a "surprise" quiz tomorrow with exactly one question. Please make sure to memorize the quadratic formula tonight so you'll be able to get the one question on tomorrow's quiz correct.

Hint: (memorize exactly this - maybe to the tune of Pop Goes the Weasel)

Homework #41: Using the Quadratic Formula worksheet
Solutions: Using the Quadratic Formula answer key

Tuesday 10/29

Today we continued working on completing the square.

Homework: #40 Complete the square worksheet
                    Solutions

Monday 10/28

Today we learned how to solve quadratics by completing the square.  The goal is to isolate a perfect square binomial and then square root both sides.  You can see Notes #14 here. (technical difficulties, both the notes and assignment numbers are wrong in the link, sorry)

HW: Assignment #39
        P. 460 #1-15odd, 19-29 odd, 42
Be sure to check your answers in the back of the book!!!

Answer to number 42
a. 6x^2 + 28x
b. 6x^2 + 28x = 384
c. 13in by 6in by 6in

Friday 10/25

Bear Down!!! (Even though they don't play this week) Here is this weekend's extra credit:

Thursday 10/24

Today we worked on the Test 11 Preview worksheet in class. Tomorrow's test will cover everything we've learned in class this week.  Be sure to study to arrive fully prepared!

Homework #38: Finish the Test 11 Preview worksheet
Solutions: Preview sheet solutions

If you're stuck on any of the homework or need help studying, you could always ask The Community.

Wednesday 10/23

Today we reviewed some factoring concepts so we can start solving quadratics better.

Homework: Factoring review
                    Solutions

Tuesday 10/22

Today we started solving quadratic equations.

Notes #13

HW#36
pg. 442 22-33 all
pg. 447 11-17odd
pg. 454 1-31 odd

Monday 10/21

Today we began to review factoring in order to solve quadratic equations. We briefly spoke about the zero product property and will revisit it tomorrow.

Homework: Factoring Worksheet
                          Solutions

Friday 10/18

All this week we have worked on the Cryptography Project. Remember, your project needs to include the following in any order:
1.) Title
2.) Encoding Formula
3.) Decoding Formula
4.) Text
5.) Encrypted Text

Here is this weekend's extra credit:

Tuesday 10/15

Today we continued to look at mod math to get us ready to work on our project which we will start tomorrow.

Solve the following equations mod 26
1x = 1
3x = 1
5x = 1
7x = 1
9x = 1
11x = 1
15x = 1
17x = 1
19x = 1
21x = 1
23x = 1
25x = 1

I gave you a hint and some solutions. The solutions are {1,3,5,7,9,11,15,17,19,21,23,25} but not in that order. We discovered in class that 21*5 = 1 mod 26 and 5*21 = 1 mod 26

Monday 10/14

Today we started talking about a cryptography project that we will work on this week. We started by learning about modular arithmetic. you have no homework tonight except to look and make sure you feel okay about the idea behind modular arithmetic.

Project

Thursday 10/10

Today we completed another common Assessment review. It was all multiple choice so we could get ready for the Common Assessment.

Homework: CA3 Mulitple Choice
                  Solutions 

Wednesday 10/3

Today we started reviewing for the common assessment

Homework: Common Assesment 3 Preview

Solutions: Front, Back

Tuesday 10/8

Today we reviewed several of the types of word problems that will be on your common assessment on Friday.

Homework #32: Word Problems Worksheet
                     Solutions

Monday 10/7

Today we corrected our tests from last Friday in class. We then spent some time in groups creating word problems that could be solved by writing a single variable equation. Remember, two questions per group are due by email or they can be written on the Algebra IH Community wall.

Go Kings Go!!!

Friday 10/4

Obviously we didn't root for the Bears enough last weekend and that's why they lost... In addition to the extra credit you will receive for rooting for Da Bears (in my heart) you can also receive real extra credit by completing this problemt:

Thursday 10/3

Sorry, I was not here and unable to post the answers at a decent hour. Nikita posted the following answers in  the community, just one more reason to join:
1. x = 11
2. 18x + 12
3. x = -6
4. x = -8
5. x = 3
6. x = 10
7. x = 1
8. x = 0
9. x =8
10. x = 23
11. x = -8/9
12. x = -2
13. F = 9/5 C + 32
14. x = 90
15. Noreen = 12, John = 24, Ian = 18
16. x = - 76/15
17. x ≤ 1/50

Wednesday 10/2

Today we learned how to solve inequalities. To solve an inequality, you treat that inequality symbol as if it was an equal sign and solve that "equation".  Be sure to flip the inequality symbol anytime you multiply or divide by a negative.

For example:  -2x + 4 < 12
                     -2x + 4 = 12
                            -4    -4
                           -2x = 8
                            -2    -2
                             x > -4
Notes #12

HW#30: P. 146 #13-35, 51-65 odd

Be sure to check your answers in the back of the book!!!

Tuesday 10/1

Today we continued solving equations.  Remember to follow all four steps:

1. Distribute
2. Move all variables to one side and combine.
3. Move all constants to the other side and combine.
4. Solve for the variable (by dividing).

We also looked at solving equations that end in an identity ( 0 = 0, has infinite solutions) and equations that have no solution (0 = any constant other than 0).

Notes #11

Assignment #29
Green Book: P. 86 #1-15, 19-35, 46, 47

Be sure to check your answers in the back of the book!!!