Identifying Parts of an Expression

This video tutorial introduces expressions, explaining their components such as variables, coefficients, constants, and exponents. It covers how to identify and count terms in expressions, providing examples for practice. The tutorial emphasizes understanding the role of each component in an expression and offers exercises to reinforce learning.

What is an expression?

• A number sentence with an equal sign

• A number sentence with only constants

• A number sentence without an equal sign

• A number sentence with only variables

What does a variable represent in an expression?

• A known number

• A letter that takes the place of an unknown number

• A constant value

• An operation sign

What is the coefficient in the expression 2x?

• 1

• 2

• 0

• x

What is a constant in an expression?

• An operation sign

• A letter that represents an unknown number

• A number that changes with variables

• A number that stands alone and does not change

What does the exponent in an expression indicate?

• The number of times a variable is added

• The number of times a variable is multiplied by itself

• The number of constants in the expression

• The number of terms in the expression

How many terms are in the expression 3x - 4y + 7 - x^2?

• 3

• 2

• 5

• 4

What separates terms in an expression?

• Operation signs

• Equal signs

• Constants

• Variables

In the expression 12x / 3y + 4, how many terms are there?

• 4

• 3

• 2

• 1

In the expression 3x^3 - 4x + 3y - 2, which of the following is a constant?

• 3x^3

• 4x

• -2

• 3y

In the expression 3x^3 - 4x + 3y - 2, how many terms are there?

• 4

• 3

• 5

• 2