Algebra review PS Panthers

Vocabulary

100

the name for the unknown number that is represented with a letter

variable

200

the name for a number whose value will always remain the same (no variable)

constant

300

the number in front of a variable in a variable term

EX: 5x (what is the 5 called?)

co-efficient

400

Numbers, symbols and operations (such as + and ×) grouped together that represent the value of something

expression

500

A mathematical expression that shows the value of the expression using an equal sign

equation

Variable Operations

100

2x + 5x = 

7x

200

2x - 5x

-3x

300

6r + 5 +7r

13r + 5

400

12r +5 +3r -5 

15r

500

-5 + 9n + 6 

1 + 9n

Equations

100

3x + 9 = 30

x = 7

200

4(2x-5) = 60

x = 10

300

x/3 + 5 = 20

x = 45

400

3x + 10 = 2x

x = -10

500

4x + 3 = 35

x=8

FACTORING

100

3x + 15

3(x + 5) 

200

8y - 72

8(y - 9) 

300

6a - 48

6(a - 8) 

400

3z + 9 

3 (z + 3)

500

2b - 16

2(b - 8) 

misc

100

What parts of your body to continue to grow all your life?

Ears and nose

200

Which fish is known for not having a brain or heart?

Jelly fish

300

What is the smallest prime number?

2

400

What is the largest internal organ in the human body?

The liver

500

What does the Richter scale measure?

Earthquakes