Chapter 2
  

Words

Definition and Example

algebraic expression

algebraic expression: An expression that

contains at least one variable.

Example

x + 8

4(m - b)

constant

A value that does not change.

Example - 3, 0, p

equation

equation: A mathematical sentence that

shows that two expressions are equivalent.

x + 4 = 7

6 + 1 = 10 - 3

solution of an equation

solution of an equation: A value or values that make an equation true.

Equation: x + 2 = 6

Solution: x = 4

variable

Variable: A symbol used to represent a quantity that can change.

In the expression 2x + 3, x is the variable.