Topic 3 Review

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

How many coefficients are in the expression 3x + 9?

Back

There is 1 coefficient, which is 3.

Front

Evaluate the expression r + 4 at r = 13.

Back

17

Front

Identify the variable in the expression 3x + 9.

Back

The variable is x.

Front

If c represents the cookies Joe bought, how much does he get if he splits them with 3 siblings?

Back

Front

What is the term for the number before a variable?

Back

Coefficient.

Front

What is a variable in mathematics?

Back

A variable is a symbol used to represent an unknown value.

Front

What is an expression in mathematics?

Back

An expression is a combination of numbers, variables, and operators (like +, -, *, /) that represents a value.

Front

What does it mean to evaluate an expression?

Back

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

Front

What is the difference between a constant and a variable?

Back

A constant is a fixed value that does not change, while a variable can represent different values.