Khan Academy
Khan Academy: Direct and Inverse Variation: Direct Variation 1
This video demonstrates how to solve a word problem that involves a directly proportional relationship and rates. Given the price of gas per gallon and the total amount of money you must figure out how many gallons of gas could be bought.
Khan Academy
Khan Academy: Graphing Solutions to Equations: Interpreting Linear Graphs
This video demonstrates real-life situations that might result in a linear relationship and shows what this relationship would look like on a graph.
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.
Khan Academy
Khan Academy: Algebra: Interpreting Linear Graphs
This video demonstrates real-life situations that might result in a linear relationship and shows what this relationship would look like on a graph. It also identifies when x and y values vary directly and when x and y values vary...
Virtual Nerd
Virtual Nerd: How Do You Write an Equation for Direct Variation From a Table?
Watch this tutorial to discover how to take a table of values and describe the relation using a direct variation equation. [2:46]
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 Directa 02
This tutorial shows how to solve a problem using direct variation. [3:59]
Sector Matemática
Sector Matematica: Psu Matematica: Proporcionalidad Directa
This tutorial shows how to derive the formula for a direct variation. [4:22]
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]