Unit 4 Review: Numeric and Algebraic Expressionss

Front

What is a coefficient in an algebraic expression?

Back

A coefficient is a numerical factor that multiplies a variable in an algebraic expression.

Front

What is the expression for the cost of brunch for n people if each person pays $12.94?

Back

The expression is 12.94n.

Front

If the expression is 6x - 12, what happens to the expression if the coefficient is multiplied by 3?

Back

The new expression is 18x - 12.

Front

What is a variable in mathematics?

Back

A variable is a symbol, usually a letter, used to represent an unknown number.

Front

Back

The value is 52.

Front

What does it mean for two expressions to be equivalent?

Back

Two expressions are equivalent if they have the same value for all values of their variables.

Front

What is the distributive property in algebra?

Back

The distributive property states that a(b + c) = ab + ac.

Front

What is the expression equivalent to 6(3m + 9)?

Back

The equivalent expression is 18m + 54.

Front

How do you evaluate an expression?

Back

To evaluate an expression, substitute the values of the variables and perform the operations.

Front

What is the difference between an expression and an equation?

Back

An expression is a combination of numbers and variables without an equality sign, while an equation states that two expressions are equal.