Respuesta :
Answer:
Option 2 is correct.
Step-by-step explanation:
We have been given the equation:
[tex]F=\frac{4}{R}[/tex]
The given equation Shows that when F is increasing R will decrease that means it can not be direct variation:
Hence, this is an inverse variation.
In joint variation we have three variables as:
z=kxy
In combined variation also we need three variables because one variable is dependent on other two.
Hence, Option 2 is correct.
