Explain how #4 relates to the diagram shown above? (i only need help with number 4 please!) Thank you :)

We have the following:
The first thing is to determine when it is bigger.
In this case x are 4 parts and y are 5 parts, therefore, y is larger, therefore
[tex]y=\frac{5}{4}x\Rightarrow y=1.25x[/tex]Therefore, the answer is the option 2 y = 1.25*x