## Wednesday, May 14, 2008

### Marlon's Scribe Post

1. Ms. Enigma said, " Five less than one third of my age is 14." How old is Ms. Enigma?

x-5, 1/3 x---> x/3 x/3 -5=14 let x= Ms. Enigma's age.
+5 +5 Substitute to check...
x/3=19 x/3 -5=14
x3 x3 57/3 -5=14
x=57 19-5=14
14=14 Ms. Enigma is 57.

2. Suppose you have \$50 and earn \$8 per hour. How many hours must you work until you have \$170?

8x+50=170 Let x = hours of work
-50 -50 Substitute to check...
8x=170 8x+50=170
/8 /8 8(15)+50=170
x=15 170=170 I must work 15 hours.

3. Valley Vudei charges a \$12 annual fee plus \$3 per movie for rentals. Last year., Jennifer spent \$90 at the store. How many movis did she rent?

3x+12=90 Let x = # of rented movies
-12 -12 Substitute to check...
3x=78 3x+12=90
/3 /3 3(26)+12=90
x=26 90=90 Jennifer rented 90 movies.

4. Kimo's car needed work. The mechanic charged him \$130 for parts plus \$40 per hour for labour. If the bill totaled \$270, how many movies did she rent?

40x+130=270 Let x = hours of labour required

-130 -130 Substitute to check...
40x=270 40x+130=270
/40 /40 40(3.5)+130=270
x=3.5 270=270 Kimo will labor 3.5 hours.
5. Suppose you are a salesperson for Quark Computer company. Each month you earn \$400 plus one sixth of your sales. What amount must you sell this month to earn \$2000?

1/6 x-->x/6 x/6+400=2000 let x = amount I must sell
-400 -400 Substitute to check...
x/6=1600 x/6 + 400=2000
x6 x6 9600/6 + 400 =2000
x=9600 2000=2000 I must sell 9600.
-Marlon

## Tuesday, May 13, 2008

### Mary's Scribe Post

BubbleShare: Share photos - Find great Clip Art Images.

### Kat's Scribe

May 13, 2008

Today in class, we were given a worksheet for homework. On one side, there are eight geometry questions. Here are the first four of these questions:

1. The length of a rectangle is 3 times the width. The perimeter id 96cm. Find the width and length.

2. The length of a rectangle is 5m greater than the width. The perimeter is 150m. Find the width and length.

3. The width of a rectangle is 12 cm less than the length. The perimeter is 156cm. Find the width and length.

4. The length of a rectangle is 2cm less than 7 times the width. The perimeter is 60cm. Find the width and length.

BUT WAIT!!

Before you attempt to solve these questions, take a look at the slide show beneath. It tells you 7 Steps to Solving the questions. It should make solving easier for you.

And now back to the questions.

1. The length of a rectangle is 3 times the width. The perimeter id 96cm. Find the width and length.

2. The length of a rectangle is 5m greater than the width. The perimeter is 150m. Find the width and length.

3. The width of a rectangle is 12 cm less than the length. The perimeter is 156cm. Find the width and length.

4. The length of a rectangle is 2cm less than 7 times the width. The perimeter is 60cm. Find the width and length.

## Wednesday, May 7, 2008

### Kate's Scribe : The E-True Hollywood Story

The E-True Hollywood Story...
Negative X

## Monday, May 5, 2008

### Jessica Q's Scribe Post

Jessica Q's Scribe Post:

Like Terms
&
The Distributive Property

## Sunday, May 4, 2008

### Charity's Scribe

For question 4 I got it wrong because I was supposed to put decreased and not less than.
For question 6 I got it wrong because I was supposed to put the 7 infront of 4x
So as you can see I would have gotten it right if only I wrote them opposite from each other.

I got write the algebriac expression or equation for the pattern you notice wrong because I rushed and The answer on the very right lower corner isn't even understandable.

My T-Chart has the (x) axis on the left and the (y) axis on the right because that is the order it has to be in.

## Friday, May 2, 2008

### Jeanine's Scribe.

So, this is my scribe for the Patterns and Relations Investigation Answer sheets.

## Thursday, May 1, 2008

### Chaseley's Scribe

Car Repairs

when you draw a t-table you have to make sure x is on the right if you are doing it from top to bottom. When it is laying down make sure the x is on the bottom.

When I said add one to figure number i meant to add one to x ( 1 + 1) . Then add 2 to y (1 + 2 = 3)

The algebraic expression I found was 2x - 1 =y.

Then I drew a chart to explain my answers.
When you draw a chart make sure you have your labels or you'll lose marks. When you number your chart always check if you marked it right on the line, not in the center. For "y" make sure you don't go up by 1,3,5,7,9,11. go up by 2's 3's 4's 5's or which ever way fits best. In this chart going up by 2's are the best.

### Dhonell's Scribe Post

Today we learned about Algebra Tiles. We were given tiles which related to Algebra. Algebra looked like this.

The colored tiles were negative intergers. The white tiles were positive intergers. The little square is a 1. The long tile is the variable. While the big square is a variable squared.

In grade 8, you would only need to know about the long tiles and the small squares. In grade 9, you would use all 3.
We then learned about the terms we would need to know for Algebra.
Terms
Variables- n/x/any letter- any number can be a variable
Constants- +1/-1 -the number that never changes
Intergers
When you have intergers, think money.
- = owe money
+ = have money

We were then given practice questions to do.
Somethings to know before doing these qustions.
1 .Simplify liked terms
2 .Always try to have one variable & one constant on the other side of the equal sign.
3 .Variable goes first.
Here is some of the questions:
Example 1:

This is how the question would look like first(4n)(-2)(+1)(-3n). If you dont get the way the question is, you can put bubbles to seperate the intergers.
Then you notice that i put a red X through the white and green variable. That shows that there was a zero pair.
Next you simplify the liked terms. Where you get one positive variable and one negative 1.
Death Blow of Intergers
In this section, we talked about how if theirs intergers in questions with brackets, its a different story.
6 -(-3) When you see there are (-) signs touching, it means you can add.
6 + 3 = 9
6-(-3+2) When you get something like this, you do the brackets first.
6-(-1) = 7 Notice how the -(- looks like a plus sign. Thats a key trick when remembering (-) touch mean adding.
Conclusion
In class, we learned about algebra and got a ton of homework. Which im almost done so go me ! And thats all of my scribe post.

### Marlon's Scribe

Pg 1

Write the following expressions in words
1. 2x-9
2. 10-4x
3. 5(x-8)
4. 7(x+5)

Write the following statements as algebraic expressions

5. 6 centimeters more than two thirds of length x
6. three times the sum of a number and two
7. nine decreased by two times a number
8.four less than five times a number
whole page /8

Pg 2

The following graph shows the first four terms of a pattern.
A) Create a chart that shows the first 10 terms of the pattern. 3 Marks
B) Write the algebraic expression for the relationship between the hours spent walking and the number of kilometres walked. 3 Marks
C) Using your algebraic expression determine how far they could walk after 50 hours. 2 Marks
whole page /8
Whole Test /16