Equations and Variables Vocabulary Review

Front

What is a variable in an expression?

Back

A symbol (often a letter) that represents an unknown value, such as 'x' in the expression 3x - 6.

Front

What operation do we perform when distributing a number?

Back

Multiply the number by each term inside the parentheses.

Front

What is a constant in an expression or equation?

Back

A number that does not change, such as '6' in the expression 3x - 6.

Front

What is a coefficient in an expression?

Back

A number that is multiplied by a variable, such as '3' in the expression 3x - 6.

Front

What does the x-axis represent on a coordinate grid?

Back

The horizontal line where the y-coordinate is zero.

Front

What does the y-axis represent on a coordinate grid?

Back

The vertical line where the x-coordinate is zero.

Front

What is an expression in mathematics?

Back

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

Front

What is an equation in mathematics?

Back

A statement that two expressions are equal, containing an equality sign.

Front

What is the purpose of parentheses in an expression?

Back

To indicate which operations should be performed first.

Front

What is the difference between an expression and an equation?

Back

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