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Cambridge IGCSE Additional Mathematics

1.4The modulus of a function

The modulus of a function in Cambridge IGCSE Additional Mathematics: what the syllabus expects you to know, the learning objectives and how to practise.
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Learning objectives

What the syllabus expects you to be able to do.

  1. 1.4Relate the graphs of y = f(x) and y = |f(x)| for linear, quadratic, cubic and trigonometric f(x).

Lessons

  • Graphs of y = |f(x)|

    30 min

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Sample question

A sample question on this topic. Answer it, check it, then read the worked answer.

The modulus of a function: sample question

1 mark

At how many points does the line y=2y = 2 meet the graph of y=∣x+1∣y = |x + 1|?

Only if the answer has a unit, e.g. cm or km/h.

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