Exploring Algebra Vocabulary and Concepts

What is a variable in algebra?

• A letter or symbol representing a value

• A number with no variable attached

• A mathematical operation

• A constant value

In the term 3x, what is the coefficient?

• x

• 3

• 3x

• None of the above

Which of the following is a constant?

• 2z

• 4x

• 7y

• 5

What is a term in algebra?

• All of the above

• A single variable

• A coefficient with a variable

• A constant

Which of the following is an expression?

• x + y = z

• 3x - 5 = 2

• 2x - 3xy + 5

• None of the above

What distinguishes an equation from an expression?

• An equation has an equal sign

• An expression has only variables

• An expression has an equal sign

• An equation has only constants

In the expression -4a - 7b + 5 + c, which is a constant?

• c

• 5

• -7b

• -4a

In the expression 9k + 7 - k + 4, what are the coefficients?

• 7 and -1

• 9 and 7

• 9 and -1

• 9 and 4

In the expression -4xy + 8y - w, what are the variables?

• xy, y, and w

• 4, 8, and 1

• None of the above

• x, y, and w

In the expression -4xy + 8y - w, what are the coefficients?

• -4, 8, and -1

• 4, 8, and 1

• -4, 8, and 1

• 4, -8, and -1