Vocabulary
The term used to represent an unknown number. It is represented by a letter.
Variable
Simplify: 5x + 2x
7x
Solve: x + 4 = 9
x=5
Solve: 2x + 1 = 11
x = 12
The vocabulary word that means two terms.
Binomial
Simplify: -6y + 2y
-4y
Solve: 3m = 12
m=4
Solve: -3x - 10 = 20
x = -30
The number that stands by itself with no variable.
Constant
Simplify: 2(m + 3)
2m + 6
Solve: x - 6 = 10
x=16
Solve: 100 = 80 + 2x
x=10
The number in front of a variable.
Coefficient
Simplify: -4x + 5y + 9x
5x + 5y
Solve: -6y=42
y = -7
Solve: 7 - 3x = 28
x = -7
When two quantities are equal.
Equation
Evaluate the expression 6x + 1 when x = -2.
-11
Solve: 45 = v + 30
v = 15
Solve: 9 = -5x + 14
x = 1