EE Vocabulary

Front

What is a variable in mathematics?

Back

A symbol for a number we don't know yet, often represented by letters like x or y.

Front

What is a coefficient?

Back

A numerical factor in a term, indicating how many times the variable is multiplied.

Front

How many variable terms are in the expression 18y - 3x + 25?

Back

2 (the variable terms are 18y and -3x).

Front

What is a constant in an expression?

Back

A fixed value that does not change, such as 25 in the expression 18y - 3x + 25.

Front

What is an expression in mathematics?

Back

A combination of numbers, variables, and operations without an equality sign.

Front

What is a term in an expression?

Back

A single mathematical component, which can be a number, variable, or the product of both.

Front

Identify the variable in the expression 12y + 18 - 6.

Back

y.

Front

What does it mean to simplify an expression?

Back

To combine like terms and reduce the expression to its simplest form.

Front

What is the difference between an equation and an expression?

Back

An equation has an equality sign (=), while an expression does not.

Front

What is a like term?

Back

Terms that have the same variable raised to the same power, such as 3x and 5x.