# Lesson Worksheet: Function Machines Mathematics

In this worksheet, we will practice using function machines to find the function rule and evaluating direct and inverse operations.

Q1:

Find the value of the function for the input given using the function machine. Q2:

Elizabeth has drawn a function machine with two different inputs as seen in the figure. Work out the missing operation that she has left out of the first box.

• A
• B
• C
• D
• E

Q3:

Use the function machine to find the input which gives an output of 18. Q4:

Find the value of the function for the input given using the function machine. Q5:

Use the function machine to find the output when the input is 10. Q6:

Use the function machine to find the output when the input is 4. Q7:

Use the function machine to find the input which gives an output of 2.5. Q8:

The figure shows a function machine with two different inputs and the intermittent calculations. Determine the three missing operations.

• A
• B
• C
• D
• E

Q9:

Find the value of the function for the input given using the function machine. Q10:

Use the function machine to find the input which gives an output of 21. 