Algebra Chapter 1

Front

What is an algebraic expression for the sum of a number and 8?

Back

Front

What is an algebraic expression for 27 decreased by a number?

Back

Front

What does it mean for a mapping diagram to be a function?

Back

A mapping diagram is a function if each input (x-value) is paired with exactly one output (y-value).

Front

What is a function in mathematics?

Back

A function is a relation that assigns exactly one output for each input.

Front

How do you determine if a relation is a function?

Back

A relation is a function if no two ordered pairs have the same first element (x-value).

Front

What is the definition of a variable in algebra?

Back

A variable is a symbol, usually a letter, that represents an unknown number.

Front

What is the difference between an expression and an equation?

Back

An expression is a combination of numbers, variables, and operations without an equality sign, while an equation states that two expressions are equal.

Front

What is the algebraic expression for the product of a number and 5?

Back

Front

What does it mean to simplify an expression?

Back

To simplify an expression means to combine like terms and reduce it to its simplest form.

Front

What is the order of operations in mathematics?

Back

The order of operations is Parentheses, Exponents, Multiplication and Division (from left to right), Addition and Subtraction (from left to right), often abbreviated as PEMDAS.