Variables and Expressions

Front

What is a variable in algebra?

Back

A symbol, often a letter, that represents an unknown number or value.

Front

What is an expression in algebra?

Back

A combination of numbers, variables, and operators (like +, -, *, /) that represents a value.

Front

What is a coefficient?

Back

A numerical factor in a term of an algebraic expression, e.g., in 3x, 3 is the coefficient.

Front

What is a constant?

Back

A fixed value that does not change, e.g., in the expression 2x + 5, 5 is a constant.

Front

What is a term in an algebraic expression?

Back

A single mathematical expression that can be a number, variable, or the product of numbers and variables.

Front

How do you write '8 more than a number' in algebraic form?

Back

8 + n, where n represents the number.

Front

How do you write '8 less than a number' in algebraic form?

Back

n - 8, where n represents the number.

Front

What is the difference between an expression and an equation?

Back

An expression does not have an equality sign, while an equation does.

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 a like term?

Back

Terms that have the same variable raised to the same power, e.g., 2x and 3x are like terms.