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Edexcel IGCSE Math B 4.B Functions as mappings Question Bank

Practise using mapping information from figures or rules to form equations and simplify relationships between unknown constants.

Syllabus
First assessment 2018
Course
Math B 4MB1

Exam points

  • use a mapping diagram or figure to form equations in unknown constants
  • simplify equations from mapped input-output pairs before solving or comparing

4.B Functions as mappings question 1

[Maximum number: 2]
Figure 3

Figure 3

Information about the function f is shown in Figure 3.
Given that f is the mapping f:x↦ax3+b\mathrm{f}: x \mapsto a x^{3}+b where a and b are constants,

use the information in Figure 3 to write down and simplify two equations in a and b.

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