The modulus of a function

Sample The modulus of a function questions

A few of the 4 questions, from easier to harder. Choose your exam board and tier to practise them, with every answer marked.

1. Question 13 marksGrade 7
   The curve $y = x^2-9$ crosses the $x$-axis at $x=-3$

What are the common mistakes in The modulus of 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.

• Solves for the region where a function is negative instead of where it is non-negative (or vice versa), giving the complementary set of values.

  $f(x) = |f(x)|$ is true exactly when $f(x) \geq 0$ (the modulus only changes the value when it's negative) - $x^2 - 9 \geq 0$

Quick answers about The modulus of a function

How many The modulus of a function practice questions are there?

There are 4 self-marking Additional Maths Maths questions on The modulus of a function, written for Cambridge IGCSE Additional Maths (0606) across Single tier. Each one is marked instantly and has a full worked solution.

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