ACT Math : How to use the inverse variation formula
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Example Questions
Example Question #5 : Direct And Inverse Variation
1. Use the given values of 
2. Solve for 
Example Question #6 : Direct And Inverse Variation
If 
To solve this algebraic equation, subtract 
We end up with the equation 
Example Question #1 : Direct And Inverse Variation
In a given set of experiments, the values of two variables are always inversely proportional. If in the first experiment the first variable was 
Recall that inverse variation means that when one variable increases, the other decreases. This gives you the following equation:
Now, for our data, we know:
You merely have to solve for 
Divide by 
Example Question #1 : Direct And Inverse Variation
Throughout a party, the number of joyful non-philosophers in a room is always inversely proportional to the number of philosophers in the room. The room begins with 
Recall that inverse variation means that when one variable increases, the other decreases. This gives you the following equation:
For our data, this means:
You merely need to solve for 
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