Khan Academy
Khan Academy: Direct and Inverse Variation: Direct Variation Application
This video demonstrates how to solve a word problem involving a direct variation. It shows how to set up a linear equation for a directly proportional relationship and solve for the constant of proportionality.
Sector Matemática
Sector Matematica: Psu Matematica: Proporcionalidad Inversa 02
This tutorial shows how to solve a problem involving inverse variation. [3:12]
Sector Matemática
Sector Matematica: Proporcionalidad Compuesta 04
This tutorial explains step by step how to solve a given problem which involve both direct and inverse variation. [3:09]
Sector Matemática
Sector Matematica: Proporcionalidad Compuesta 01
This tutorial shows how to solve a problem involving both direct and inverse variation. [7:33]
Sector Matemática
Sector Matematica: Proporcionalidad Compuesta 02
This tutorial explains step by step how to solve a problem involving both direct and inverse variation. [5:01]
Sector Matemática
Sector Matematica: Psu Matematica: Proporcionalidad Inversa 01
This tutorial shows how to derive the formula for an inverse variation. [3:24]
Sector Matemática
Sector Matematica: Proporcionalidad Compuesta 03
This tutorial explains step by step how to solve a problem involving both direct and inverse variation. [5:29]
Shmoop University
Shmoop: Inverse Variation
This animation features the mathematical concept of inverse variation and how to perform the calculation. 2:21sec.