Vocabulary
Expressions
One-Two Step Eq.
Two-Step Eq.
100

The term used to represent an unknown number. It is represented by a letter.

Variable

100

Simplify:  5x + 2x

7x

100

Solve:   x + 4 = 9

x=5

100

Solve:  2x + 1 = 11

x = 12

200

The vocabulary word that means two terms. 

Binomial

200

Simplify:   -6y + 2y

-4y

200

Solve:  3m = 12

m=4

200

Solve:  -3x - 10 = 20 

x = -30

300

The number that stands by itself with no variable. 

Constant

300

Simplify:  2(m + 3)

2m + 6

300

Solve:  x - 6 = 10

x=16

300

Solve:   100 = 80 + 2x

x=10

400

The number in front of a variable. 

Coefficient

400

Simplify:  -4x + 5y + 9x

5x + 5y

400

Solve:  -6y=42

y = -7

400

Solve:  7 - 3x = 28

x = -7

500

When two quantities are equal. 

Equation

500

Evaluate the expression 6x + 1 when x = -2. 

-11

500

Solve:  45 = v + 30

v = 15

500

Solve: 9 = -5x + 14

x = 1