Functions (Edexcel IGCSE Maths A: Foundation): Exam Questions

Here is a number machine.

Work out the output when the input is 14

Here is a different number machine

When the input is 11 the output is 64

Write a number on the dotted line to complete the number machine.

Here is a number machine.

When the input is 7 the output is 60

Work out the value of

Here is a different number machine.

The input is

Write down an expression, in terms of , for the output.

Here is a number machine.

Work out the output when the input is 14

Work out the input when the output is 21

The input is . The output is . Write down a formula for in terms of .