# Use variables to represent quantities that change in relationship to one another

Use variables to represent two quantities in a real-world problem that change in relationship to one another; write an equation to express one quantity, thought of as the dependent variable, in terms of the other quantity, thought of as the independent variable. Analyze the relationship between the dependent and independent variables using graphs and tables, and relate these to the equation.

## Lessons

• #### Identify variables and their relationship in a real-world situation

In this lesson you will learn to identify the variables and their relationship given a real-world scenario.

• #### Identify variables and their relationship in a table

In this lesson you will learn to identify the variables and their relationship given a table.

• #### Identify variables and their relationship in a graph

In this lesson you will learn to identify the variables and their relationship given a graph.

• #### Convert real world situations into equations using models

In this lesson you will learn to convert real world situations into equations by using models.

• #### Use a graph and a table to interpret independent and dependent variables

In this lesson you will learn to convert a graph into an equation by using a table.

• #### Create equivalent algebraic representations (table, graph, equation, word problem)

In this lesson you will learn to create equivalent representations by identifying variables and their relationship to one another.