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Date May 2018 Marks available 4 Reference code 18M.1.SL.TZ1.S_3
Level Standard Level Paper Paper 1 Time zone Time zone 1
Command term Sketch Question number S_3 Adapted from N/A

Question

Consider a function f (x) , for −2 ≤ x ≤ 2 . The following diagram shows the graph of f.

On the grid above, sketch the graph of f −1.

Markscheme

A1A1A1A1  N4

Note: Award A1 for evidence of approximately correct reflection in y = x with correct curvature.

(y = x does not need to be explicitly seen)

Only if this mark is awarded, award marks as follows:

A1 for both correct invariant points in circles,

A1 for the three other points in circles,

A1 for correct domain.

[4 marks]

Examiners report

[N/A]

Syllabus sections

Topic 2—Functions » SL 2.2—Functions, notation domain, range and inverse as reflection
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