## Sunday, January 29, 2012

### Rise and Run

January 27, 2012's class

Chapter 6

In class we learned more about finding the equation of a graph using rise and run. We had many examples.

Now we know what m is, we can put that in our equation to find y.
y=mx+b
Remember the m is the slope or gradient and the b is the y intercept.
The m will be 4/7 and the b will be 1.
y=4/7x+1

We put the results in a table:

Here's how we got the y using the equation:
y=mx+b
=4/7x+1
= 4/7(1)+1 (you multiply 4/7 by 1)
=4/7+1 (you add 1 to 4/7)
=1 4/7

y=mx+b
=4/7x+1
=4/7(2)+1
=8/7=1 (simplify 8/7 to 1 1/7)
=1 1/7+1
=2 1/7

We also did a problem where b=0.

Since b=0, then in the equation there doesn't need to be +b. We used 1 and 14 for x.
y=mx
=2/3x
=2/3(1)
=2/3

y=mx
=2/3x
=2/3(14)
=28/3 (simplify 28/3 to 9 1/3)
=9 1/3

You call them by where they go through the line

Homework
Chapter 6.3
-all practice
-all apply
-try any 2 of extend
-Homework Book
-CYU question1 due monday
-MANGAHIGH!!

## Monday, January 23, 2012

HOMEWORK:
CYU 1 hand in for marks
EXTEND ONE OF E`M
6.2 HANDBOOK
MANGAHIGH !!!
DERECK WILL BE DOING THE NEXT BLOG ..

## Wednesday, January 18, 2012

### Chapter 6 Linear Equations

Linear Relation y=m x+b
Linear Equation y=m x-b

Ordered Pairs

Ordered Pairs have order that is (xy)

Cartesian Plane
Coordinate Grid

Dependent
Independent

Tables

Choice

y=m x+ 6
6=2 2t+2

Chairs for 15th table?
6=2t+2
c=2t+2
=2(15)+2
=30t+2
=32

32 chair for the 15th table.

6=2t+26=2t+2
c=2t+2c=2t+2

Leg=5

Perimeter

Perimeter of the 17th triangle
A Perimeter

P=5t+15
=5(17)+15
=85+10
=95

The 25th set has how many marbles?

M=2s+3

=2(8)+3
=2(8)+3
=59

HOMEWORK
• Key Ideas
• CYU #2,3
• Practice Odd or Even
• Apply All
• Extend #17 and 15 or 16
The next person who will do the blog is
Rowell Cabate
Mangahigh

## Thursday, January 12, 2012

### Brandon's Blog Post

Positive added to positive is always positive, adding negative to negative is negative also. Adding to positive, keep sign of integer with greatest absolute value. positive added to negative do as negative added to positive.

Here are some examples:
1) 1+1 = 2
2) -2+-2 = -4
3) -3+2 = -1
4) 5+-2 = 3

Multiplying Integers:
Positive multiplied with positive is positive, however negative multiplied by negative is positive, negative multiplied with positive is negative, and positive multiplied by negative is always negative.

Here are some examples:
1) (2)(2) = 4
2) (-6)(-2)= 12
3)(-3)(3)= -9
4) (3)(-3)= -9

6x²+3x-4y+5+5y+6x-7x²-7 (Remember that colours represent like terms)

Step 1 ) Collect like terms in order of degree and alphabet.

6x²-7+3x+6x-4y+5y+5-7

Step 2) Simplify

-x²+ax+y-2.

Removing brackets when combining like terms:
(4x+3) + (-6x-3)

Step 1) Look at the sign (+,-) in front of each bracket, if it is a (+) leave the signs in the bracket the same, remove the (+) and rewrite the question.

Example:

4x+3-6x-3

Step 2) Combine like terms
4x-6x+3-3

Step 3) Simplify

-2x

Here's another one:

(-3x+4) + (+5x-7) = -3x+4+5x-7
= -3x+5x+4-7
= 2x-3

(Remember to always write your work on the right!)

Combining like terms with negative brackets:

(-6x+7) - (-4x+2)

Step 1) Look at the sign (+,-) in front of each bracket, if it is a (-), multiply each term by negative one

-6x+4x4+7-2

Step 2) Combine like terms

-6x+4x+7-2

Step 3) Simplify

-2x+5

HOMEWORK !
Manga high
CYU #2, #4
Practice odd or even
apply # 13-22
Extend # 23-25
Page 2 Interaction sheet
Why did the donkey get a passport?
Why is it good to play cards in a graveyard?

The next person that will be doing the blog is

BJ Alcantara

p.s the colours and sizes won't work on my post.

## Wednesday, January 11, 2012

### Degrees and Terms

Degree of a term: Is the sum of it's exponents.
Examples:

Degree of a polynomial: Is the greatest degree of any of the terms in a polynomial
Examples:

Like terms will have the same variables and the same degree of variable or be constant
Example: 6x^2 - 3x^2y

Unlike terms do not share a common variable or degree of variable
Example: 6xy^2 - 3x^2y

Textbook work:
• CYU #1, 3, and 4
• Prac: # 5-12
• Apply #15, 17 and 19
• Extend #28, 29 and 31
• 5.1 EXTRA PRACTICE
• AND MANGA HIGH!!

## Tuesday, January 10, 2012

### Algebra

Algebra:The study of mathematics that uses letters or symbols to represent numbers that are unknown.

Term:An expression formed by the product of numbers and variables.
EXAMPLE: 6,x,-3x

Coefficient:The number that multiplies variables in a term.
EXAMPLE: 6a, -3c

Variable:A letter or symbol that represents an unknown/changing value
EXAMPLE: -2z, 4xy , 6,st

Constant: A term that is representing by a number.
EXAMPLE: 6X-3, 4 cubed+6

EXAMPLE:4xcubed-6x squared+3x-8

Monomial:A polynomial made up of one term.
EXAMPLE: -6, j, 3x, 4x squared, -5ab

Binomial:A polynomial made up of two terms.
EXAMPLE: 6xsquared+6x, 3xy-3y, 2x+6-7-4m

Trinomial:A polynomial made up of three terms.
EXAMPLE: 6x squared-6x-6

HOMEWORK!!!