Topic 3b Review

Vocab

100

Variable

a letter or symbol used to represent one or more unknown quantity

200

Coefficient 

the number that is multiplied by the variable in an algebraic expression

300

Constant 

a specific number whose value does not change

400

Algebraic Expressions

an expression that contains one or more variables

500

Equivalent Expressions

are expressions that have the same value for all possible values of the variable

Identify

100

22y+20, identify the variable 

y

200

22y+20, identify the constant 

20

300

22y+20, identify the coefficient 

22

400

x+30, identify the variable and constant 

x and 30

500

x+30, identify the coefficient 

1

Evaluate

100

22r, r=5

110

200

2y+35, y=5

45

300

3x+150, x=11

183

400

5x+3y+2x, x=12 y=2

90

500

0x+0y+z x=5, y=3, z=1,220

1,220

Like Terms

100

3x+55x

58x

200

30y-29y

y

300

3x+22y

3x+22y

400

15+3x+7y+15x+10y

15+18x+17y

500

15-5+7y-5x-3x+202y

10+209y-2x

Distributive Property

100

4(x-3)

4x-12

200

6(10 – 5)

60-30

300

8(5-n)

40-8n

400

3(2^2 . 2)

24

500

3² (x+7)

9x + 63