Unit 6 Lesson 4 Review

What is a coefficient in mathematical terms?

• A variable that is added to a number.

• A number that is multiplied by a variable.

• The result of a multiplication between two variables.

• A constant that cannot be changed.

In the expression 3x + 5, what is the coefficient of x?

• 5

• 3

• x

• 1

In the expression y + 5, what is the coefficient of y?

• 5

• 0

• 1

• y

What is a solution to an equation?

• A number that disproves the equation

• A number that can be used in place of the variable to make the equation true

• A number that makes the equation more complex

• A number that has no relation to the equation

If m + 1 = 8, what is the solution to the equation?

• 6

• 7

• 9

• 10

What is a variable in the context of mathematics?

• A. A symbol that represents a fixed number

• B. A letter that represents a number, which can have different values

• C. A type of mathematical operation

• D. A specific numerical value that does not change

If the variable x in the expression 10 - x is 5, what is the value of the expression?

• A. 15

• B. 5

• C. 10

• D. 2

What is the value of the expression 5 - 2?

• 2

• 3

• 4

• 7

What is the value of the expression 5 - 2.1?

• 2.9

• 3.1

• 2.8

• 3.0

What is the value of the expression 5 - 2.17?

• 2.83

• 2.93

• 3.17

• 2.87