Jeanine's Scribe.

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

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

Jessica B's B.O.B.

Surface Area
The surface area is the measurment of the outside part of a shape.

^^CLICK for bigger picture^^


Volume
Volume is the measurement of how much space a shape takes up.











^^CLICK for bigger picture^^

Jessica Q's Scribe Post

Circumference of a Circle:

• The circumference(c) of a circle is the distance around the circle.
  c = 2πr
• The radius (r) of a circle is the distance from the center of the circle to the outside.
• The diameter(d) of a circle is the length of half of the circle or twice the length of the radius.
• π or pi is a constant and is approximately equal to 3.14
• FORMULA:
  Radius: d / 2
  Diameter: 2 x r
  Circumference: 2 x π x r

Area of a Circle:
Radius² - Area of a circle
- Area of circle = πr²
π (Pi) - 3.14
The Area - (3.14)(r²)



Surface Area of a Cylinder:




Volume of a Cylinder:

Formula:
Volume = Area of base x height

Chaseley's BOB

Surface Area Of a Rectangular Prism

surface area is the total amount of area a whole 3D shape contains.

formula: area front + area back+area side+ area side2+area top+area top+area bottom.

area front + area back = L x W
area side + area side2 = W x H
area top+ area bottom = L x H

SA = area front + area back+area side+ area side2+area top+area top+area bottom. SA= 2 (L x W) + 2(W x H) + 2 (Hx L)
SA= 2 (4cm ² x2cm ²) + 2 (4 cm ² x 2 cm ²) + 2( 2cm ² x 2cm ²)
SA= 2 (8cm ²) + 2 (8 cm ²) + 2 (4 cm ²)
SA= 16cm ²+16cm ²+8cm ²
SA= 40 cm ²

looks complicated ? REALLY ITS NOT :)

___________________________________________________________

volume of a rectangular prism

V=(L X W) x H
V= (17cm ² x 11 cm ²) x 1 cm ²
V= 187 cm ² x 1cm ²
V=187cm³

Volume is the amount of space an object takes up.

FORMULA: LxWxH= volume³