AQA AS Paper 1 Specimen — Question 10 7 marks

Exam BoardAQA
ModuleAS Paper 1 (AS Paper 1)
SessionSpecimen
Marks7
TopicExponential Functions

10 A student conducts an experiment and records the following data for two variables, \(x\) and \(y\).
\(\boldsymbol { x }\)123456
\(y\)1445130110013003400
\(\log _ { 10 } y\)
The student is told that the relationship between \(x\) and \(y\) can be modelled by an equation of the form \(y = k b ^ { x }\) 10
  1. Plot values of \(\log _ { 10 } y\) against \(x\) on the grid below.
    [0pt] [2 marks]
    \includegraphics[max width=\textwidth, alt={}, center]{3176ee0c-fba2-4878-af3a-c3ac092bbc1f-10_1086_1205_1037_536} 10
  2. State, with a reason, which value of \(y\) is likely to have been recorded incorrectly.
    [0pt] [1 mark] 10
  3. By drawing an appropriate straight line, find the values of \(k\) and \(b\).
    [0pt] [4 marks]