Parts of an Expression/Equation

Front

What is a constant in an expression?

Back

A constant is a fixed value that does not change. In the expression 4y + 2 + x, the constant is 2.

Front

What is a variable in an expression?

Back

A variable is a letter that represents a number. In the expression 3x + 9, the variable is x.

Front

What is a coefficient?

Back

A coefficient is the number that is multiplied by a variable. For example, in the term 4y, 4 is the coefficient.

Front

What is an expression?

Back

An expression is a combination of numbers, variables, and operations (like addition and multiplication) that represents a value.

Front

What is an equation?

Back

An equation is a mathematical statement that shows that two expressions are equal, often using an equals sign (=).

Front

How do you simplify the expression 2x + 1 + 7x?

Back

To simplify, combine like terms: 2x + 7x = 9x, so the expression simplifies to 9x + 1.

Front

What are like terms?

Back

Like terms are terms that have the same variable raised to the same power. For example, 3x and 5x are like terms.

Front

What is the difference between an expression and an equation?

Back

An expression does not have an equals sign and represents a value, while an equation states that two expressions are equal.

Front

What is a term in an expression?

Back

A term is a single part of an expression, which can be a number, a variable, or a combination of both, such as 4y or 2.

Front

What does it mean to evaluate an expression?

Back

To evaluate an expression means to calculate its value by substituting the variables with numbers.