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Date May 2018 Marks available 4 Reference code 18M.1.SL.TZ2.S_5
Level Standard Level Paper Paper 1 Time zone Time zone 2
Command term Write down Question number S_5 Adapted from N/A

Question

The following diagram shows the graph of a function  f , for −4 ≤ x ≤ 2.

On the same axes, sketch the graph of  f ( x ) .

[2]
a.

Another function, g , can be written in the form g ( x ) = a × f ( x + b ) . The following diagram shows the graph of g .

Write down the value of a and of b.

[4]
b.

Markscheme

* This question is from an exam for a previous syllabus, and may contain minor differences in marking or structure.

A2 N2
[2 marks]

a.

recognizing horizontal shift/translation of 1 unit      (M1)

eg  = 1, moved 1 right

recognizing vertical stretch/dilation with scale factor 2      (M1)

eg   a = 2,  ×(−2)

a = −2,  b = −1     A1A1 N2N2

[4 marks]

b.

Examiners report

[N/A]
a.
[N/A]
b.

Syllabus sections

Topic 2—Functions » AHL 2.8—Transformations of graphs, composite transformations
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