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CAIE IGCSE Additional Math 7.4 transform relationships to straight-line form

Use this linearised-graphs page to choose transformed variables, draw the straight line and read constants from gradient and intercept.

Syllabus
2028–2030
Course
Additional Mathematics 0606

Exam points

  • Choose transformed variables such as root y or 1/x to produce a straight line.
  • Draw the straight-line graph from transformed data values on the given axes.
  • Use gradient and intercept to find constants such as A, b or parameters in the model.

7.4. Transform relationships to straight-line form question 1

[Maximum number: 6]

Variables y and x are known to be connected by the relationship y=Abxy=A b^{x} where A and b are constants. The table shows values of y for certain values of x.

Table for Question 7.4. Transform relationships to straight-line form question 1 — CAIE IGCSE Additional Math

Use your graph to find values of A and b, giving each to 1 significant figure.

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