2: Introducing Proportional Relationships Last updated Save as PDF Page ID 34983 Illustrative Mathematics OpenUp Resources 2.1: Representing Proportional Relationships with Tables 2.1.1: One of These Things is Not Like the Others 2.1.2: Introducing Proportional Relationships with Tables 2.1.3: More about Constant of Proportionality 2.2: Representing Proportional Relationships with Equations 2.2.1: Proportional Relationships and Equations 2.2.2: Two Equations for Each Relationship 2.2.3: Using Equations to Solve Problems 2.3: Comparing Proportional and Nonproportional Relationships 2.3.1: Comparing Relationships with Tables 2.3.2: Comparing Relationships with Equations 2.3.3: Solving Problems about Proportional Relationships 2.4: Representing Proportional Relationships with Graphs 2.4.1: Introducing Graphs of Proportional Relationships 2.4.2: Interpreting Graphs of Proportional Relationships 2.4.3: Using Graphs to Compare Relationships 2.4.4: Two Graphs for Each Relationship 2.5: Let's Put it to Work 2.5.1: Four Representations 2.5.2: Using Water Efficiently