Function Machines and Inverse Operations Quiz

What is a function machine?

• A tool for measuring time

• A machine that takes an input, applies a rule, and gives an output

• A device that multiplies numbers

• A calculator for complex equations

Which operation is the inverse of addition?

• Multiplication

• Subtraction

• Exponentiation

• Division

If a function machine adds 17 to an input, what is the output when the input is 2?

• 15

• 19

• 20

• 18

What is the inverse operation of multiplying by 7?

• Adding 7

• Subtracting 7

• Dividing by 7

• Multiplying by 7

In a double function machine, if the first operation is multiplying by 4, what is the inverse operation?

• Adding 4

• Multiplying by 4

• Subtracting 4

• Dividing by 4

If 8 is the output of a function machine that divides by 11, what was the input?

• 88

• 11

• 19

• 72

What is the input if the output is 11 and the function machine multiplies by 12?

• 11

• 144

• 12

• 132

If a function machine subtracts 21 and the output is 14, what is the input?

• 35

• 21

• 14

• 7

What is the result of using the inverse operation on 35 divided by 7?

• 28

• 35

• 7

• 5

How can you verify your answer when using inverse operations?

• By asking a friend

• By substituting back into the original equation

• By using a calculator

• By guessing