AQA AS Paper 1 2020 June — Question 2

Exam BoardAQA
ModuleAS Paper 1 (AS Paper 1)
Year2020
SessionJune
TopicComposite & Inverse Functions

2 Given that \(\mathrm { f } ( x ) = 10\) when \(x = 4\), which statement below must be correct?
Tick \(( \checkmark )\) one box. $$\begin{aligned} & \mathrm { f } ( 2 x ) = 5 \text { when } x = 4
& \mathrm { f } ( 2 x ) = 10 \text { when } x = 2
& \mathrm { f } ( 2 x ) = 10 \text { when } x = 8
& \mathrm { f } ( 2 x ) = 20 \text { when } x = 4 \end{aligned}$$ □