25 terms

Constant

Values that don't change

Variable Quantities

Values that change

Variable

A symbol (usually a letter) that represents one or more numbers

Numerical Expression

A mathematical phrase that contains numbers and operation symbols

Algebraic Expression

Mathematical phrase that contains numbers, operation symbols, and at least one variable

Opposite

Addition and subtraction

Reciprocal

Flip the fraction

Natural Numbers

Numbers used to count

Whole Numbers

Natural numbers including zero

Integers

Whole numbers and their opposites

Rational Numbers

All numbers that can be written as fractions including integers and repeating and ending decimals

Irrational Numbers

All decimals that never end or repeat

Evaluate

Substitute a number for each variable then simplify using order of operations

Term

Number, variable or a product of both

Coefficient

Number in front of the variable

Constant Term

No variables just a number

Like Terms

Same variables raised to the same power

Equation

A statement that two expressions are equal

Solution of an Equation

Finding all of you values of a variable that make an equation true

Inverse Operations

Operations that "undo" each other

Identity

An equation that is true for every value of the variable.

Literal Equation

An equation that has at least two different variables

Extraneous Solution

an apparent solution that doesn't work in the equation

Compound inequalities

two inequalities are joined by the words "and" or "or"

Absolute Value

distance a number is from 0