Function machines number Year 7

If the function machine multiplies the input by 2, what is the output when the input is 7?

• 16
• 10
• 12
• 14

A function machine subtracts 4 from the input. If the output is 10, what was the input?

• 14
• 12
• 16
• 10

If the function machine adds 9 to the input, what is the output when the input is x (where x = 3)?

• 12
• 10
• 9
• 6

Create an equation to represent a function machine that doubles the input and then adds 6. Express this in the form: Output = ?

• x + 2
• 2x - 6
• x + 6
• 2x + 6

Using your function machine with a rule of 'Divide by 2' and an input of 16, what is the output?

• 12
• 6
• 10
• 8

What happens to the output when you change the input in a function machine?

• It changes according to the rule.
• It always stays the same.
• It becomes larger only.
• It becomes smaller only.

Why is it important to understand algebraic functions in real-world applications?

• They are not useful at all.
• They are only for mathematicians.
• They make calculations harder.
• They help in solving practical problems.

What is the output when the function machine adds 5 to the input of 10?

• 20
• 5
• 10
• 15

If the function machine subtracts 3 from the input, what is the output when the input is 9?

• 6
• 9
• 12
• 3

If the input is 5 and the function machine multiplies by 4, what is the output?

• 10
• 25
• 15
• 20