Evaluating Algebraic Expressions

The video tutorial explains how to evaluate algebraic expressions, specifically focusing on the expression '9 + 3x' when x equals 2. It introduces the concept of variables and expressions, and provides a step-by-step guide to solving the problem by substituting the value of x and performing arithmetic operations.

What is the first step in evaluating the expression 9 + 3x when x equals 2?

• Add 9 and 3

• Multiply 3 and x

• Divide 9 by 3

• Substitute 2 for x

What does the letter 'x' represent in the expression 9 + 3x?

• A coefficient

• An operator

• A constant

• A variable

What is the purpose of a variable in an expression?

• To represent a fixed number

• To simplify calculations

• To perform operations

• To represent one or more numbers

Which of the following is NOT a component of an algebraic expression?

• Variable

• Operation

• Equation

• Number

In the expression 9 + 3x, what is the role of the number 3?

• It is a coefficient

• It is a variable

• It is a constant

• It is an operator

Which of the following is an example of an algebraic expression?

• 9 / 3

• 9 - 3

• 9 + 3

• 9x + 3

Which operation is represented by the '+' sign in the expression 9 + 3x?

• Subtraction

• Multiplication

• Addition

• Division

What is the term for a number that multiplies a variable in an expression?

• Coefficient

• Operator

• Constant

• Exponent

In the expression 9 + 3x, what is the constant term?

• None

• 9

• 3

• x

What operation should be performed first when evaluating 9 + 3x for x = 2?

• Division

• Multiplication

• Addition

• Subtraction