Variables and Expressions

Front

What are variables in an expression?

Back

Variables are symbols used to represent unknown values in mathematical expressions, such as x, y, and w.

Front

List the variables in the expression: 6y – 4x + 8w - 7.

Back

The variables are x, y, and w.

Front

What is an algebraic expression?

Back

An algebraic expression is a mathematical phrase that can include numbers, variables, and operation symbols.

Front

Simplify the expression: 3x + 7 + x - 12.

Back

The simplified expression is 4x - 5.

Front

How do you write an algebraic expression for '8 more than a number'?

Back

The algebraic expression is 8 + n, where n represents the number.

Front

What is the sum of 14 and b expressed algebraically?

Back

The algebraic expression is 14 + b.

Front

What is the difference between a variable and a constant?

Back

A variable is a symbol that can change, while a constant is a fixed value that does not change.

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 are like terms in an expression?

Back

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

Front

What is the purpose of using variables in algebra?

Back

Variables allow us to create general formulas and solve problems involving unknown quantities.