Unit 3

Section A: Proportional Relationships

• Lesson 1: Understanding Proportional Relationships

  Let’s study some graphs.

  • Lesson Activities
  • Practice Problems

• Lesson 2: Graphs of Proportional Relationships

  Let’s think about scale.

  • Lesson Activities
  • Practice Problems

• Lesson 3: Representing Proportional Relationships

  Let’s graph proportional relationships.

  • Lesson Activities
  • Practice Problems

• Lesson 4: Comparing Proportional Relationships

  Let’s compare proportional relationships.

  • Lesson Activities
  • Practice Problems

Section B: Representing Linear Relationships

• Lesson 5: Introduction to Linear Relationships

  Let’s explore some relationships between two variables.

  • Lesson Activities
  • Practice Problems

• Lesson 6: More Linear Relationships

  Let’s explore some more relationships between two variables.

  • Lesson Activities
  • Practice Problems

• Lesson 7: Representations of Linear Relationships

  Let’s write equations from real situations.

  • Lesson Activities
  • Practice Problems

• Lesson 8: Translating to y=mx+b

  Let’s see what happens to the equations of translated lines.

  • Lesson Activities
  • Practice Problems

Section C: Finding Slopes

• Lesson 9: Slopes Don’t Have to be Positive

  Let’s find out what a negative slope means.

  • Lesson Activities
  • Practice Problems

• Lesson 10: Calculating Slope

  Let’s calculate slope from two points.

  • Lesson Activities
  • Practice Problems

• Lesson 11: Equations of All Kinds of Lines

  Let’s write equations for vertical and horizontal lines.

  • Lesson Activities
  • Practice Problems

Section D: Linear Equations

• Lesson 12: Solutions to Linear Equations

  Let’s think about what it means to be a solution to a linear equation with two variables in it.

  • Lesson Activities
  • Practice Problems

• Lesson 13: More Solutions to Linear Equations

  Let’s find solutions to more linear equations.

  • Lesson Activities
  • Practice Problems

Section E: Let’s Put It to Work

• Optional

  Lesson 14: Using Linear Relations to Solve Problems

  Let’s write equations for real-world situations and think about their solutions.

  • Lesson Activities