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Date November 2016 Marks available 2 Reference code 16N.1.AHL.TZ0.H_3
Level Additional Higher Level Paper Paper 1 Time zone Time zone 0
Command term State Question number H_3 Adapted from N/A

Question

A rational function is defined by f ( x ) = a + b x c where the parameters a ,   b ,   c Z and x R { c } . The following diagram represents the graph of y = f ( x ) .

N16/5/MATHL/HP1/ENG/TZ0/03

Using the information on the graph,

state the value of a and the value of c ;

[2]
a.

find the value of b .

[2]
b.

Markscheme

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

a = 1    A1

c = 3    A1

[2 marks]

a.

use the coordinates of ( 1 ,   0 )  on the graph     M1

f ( 1 ) = 0 1 + b 1 3 = 0 b = 2    A1

[2 marks]

b.

Examiners report

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

Syllabus sections

Topic 2—Functions » SL 2.2—Functions, notation domain, range and inverse as reflection
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Topic 2—Functions » SL 2.4—Key features of graphs, intersections using technology
Topic 2—Functions

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