# Direct and inverse variation

8 videos
1 skill
Whether you are talking about how force relates to acceleration or how the cost of movie tickets relates to the number of people going, it is not uncommon in this universe for things to vary directly. Similarly, when you are, say, talking about how hunger might relate to seeing roadkill, things can vary inversely. This tutorial digs deeper into these ideas with a bunch of examples of direct and inverse variation.

### Direct and inverse variation

VIDEO 9:54 minutes
Understanding direct and inverse variation

### Recognizing direct and inverse variation

VIDEO 7:05 minutes
Examples of variables varying directly and inversely

### Proportionality constant for direct variation

VIDEO 1:44 minutes
Proportionality Constant for Direct Variation

### Direct and inverse variation

PRACTICE PROBLEMS
Select a function that indicates direct or inverse variation between two variables.

### Direct variation models

VIDEO 11:11 minutes
Direct Variation Models

### Direct variation 1

VIDEO 3:39 minutes
Direct Variation 1

### Inverse variation application

VIDEO 4:42 minutes
Inverse Variation Application

### Direct inverse and joint variation

VIDEO 5:30 minutes
Direct Inverse and Joint Variation

### Direct variation application

VIDEO 2:02 minutes
Direct Variation Application