Question

Identify the variation as direct, inverse, joint or combined F=4/R

Answer 1

Haha. I am doing the same thing today. Its inverse 

Answer 2

Option 2 is correct.

Explanation:

We have been given the equation:

`F=(4)/(R)`

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.