Unit 4: Introduction to Equations Vocabulary

Front

What is a Constant?

Back

A fixed value that does not change.

Front

What is a Coefficient?

Back

A number multiplied by a variable (e.g., in 5z + 10, 5 is the coefficient of z).

Front

What is an Equation?

Back

A mathematical statement that shows that two mathematical expressions are equal (e.g., 3x + 2 = 20).

Front

What is the Distributive Property?

Back

To multiply the number outside the parentheses with each number inside the parentheses (e.g., 3(x+3) = 3x + 9).

Front

What are Equivalent Expressions?

Back

Expressions that are the same, even though they may look different (e.g., 2x + 5 = 5 + 2x).

Front

What is a Variable?

Back

A symbol (often a letter) that represents a number that can change (e.g., x in 2x + 3).

Front

What is an Expression?

Back

A combination of numbers, variables, and operations (e.g., 4x + 7).

Front

What is the Addition Property of Equality?

Back

If you add the same number to both sides of an equation, the two sides remain equal.

Front

What is the Multiplication Property of Equality?

Back

If you multiply both sides of an equation by the same number, the two sides remain equal.

Front

What is a Term?

Back

A single mathematical expression (e.g., 5x, -3, or 7y^2).