What makes a mapping a function

Sample What makes a mapping a function questions

A few of the 3 questions, from easier to harder. Choose your exam board and tier to practise them, with every answer marked.

1. Question 13 marksGrade 7
   The mapping $f$ is defined by $f : x \mapsto \pm\sqrt{x}$

What are the common mistakes in What makes a mapping a function?

When a pupil makes one of these on Revision Workshop, the marking engine names the mistake and explains it, instead of just marking the answer wrong.

• Squares the input value instead of taking its square root as the mapping/operation requires

  The mapping is $x \mapsto \pm\sqrt{x}$, so at $x = 4$

Quick answers about What makes a mapping a function

How many What makes a mapping a function practice questions are there?

There are 3 self-marking IGCSE and Additional Maths Maths questions on What makes a mapping a function, written for Cambridge IGCSE Additional Maths (0606), Pearson International GCSE Maths A (4MA1), Cambridge IGCSE Mathematics (0580), Cambridge IGCSE (9-1) Mathematics (0980) across Higher and Single and Extended tier. Each one is marked instantly and has a full worked solution.

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