Vocabulary

What is an algebraic expression?

• An expression that contains an operation, numbers and one or more variables

• An equation that contains an operation, numbers, and one or more variables

• An expression with only variables

• an expression with only numbers

Which of these is not a variable?

• 3

• x

• a

• b

What is a constant?

• an operation

• a variable which you can substitute for a number

• a specific number whose value does not change

How do you evaluate?

• you analyze the equation

• when you substitute a number for that variable and find the value of the expression

Which pairs are not like terms?

• 2x²,x²

• 3y³,y³

• x²,x3