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Henrico County Public Schools, Virginia
 
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Module - Solving Equations
Lesson 6 - Direct & Inverse Variation

Lessons

1-

Solving Equations by Addition or Subtraction

2-

Solving Equations by Multiplication or Division

3-

Solving Multi-Step Equations

4-

Solving Equations with Variables on Both Sides

5-

Solving Equations and Formula

6-

Direct & Inverse Variation

7-

Module Review

 

 
SOL

A.8 - The student, given a situation in a real-world context, will analyze a relation to determine whether a direct or inverse variation exists, and represent a direct variation algebraically and graphically and an inverse variation algebraically.

Common Core Standards
7.RP.2b
Warm-up
  1. ExamView Quiz: Solving Literal Equations
Lessons
  1. Notes: Direct Variation (ppt)
  2. Notes: Direct Variation #2 - related to slope (ppt)
  3. Notes: Direct/Indirect Variation (doc) | (pdf)
  4. Notes: Direct and Inverse Variations (ppt) *New 2009 SOL Content*
  5. Notes: Direct and Inverse Variations #2 (ppt) *New 2009 SOL Content*
Videos
  1. Video: PH Using Direct Variation to Describe a Situation
  2. Video: PH Using a Proportion as an Equation of Direct Variation
  3. Video: PH Using a Proportion to Solve a Direct Variation Problem
  4. Video: PH Using Inverse Variation *New 2009 SOL Content*
Explore Learning
  1. Direct Variation: Adjust the constant of variation and explore how the graph of the direct variation function changes in response.
  2. Direct and Inverse Variation: Adjust the constant of variation and explore how the graph of the direct or inverse variation function changes in response. Compare direct variation functions to inverse variation functions.
Geogebra

 

Internet Sites
  1. Interactive Notes: Direct Variation - lessons and practice problems at Regentsprep.org
Tasks

 

Homework
  1. Direct Variation Worksheet (doc)
  2. Glencoe PWS (pdf)
  3. Glencoe SG (pdf)
Journal
  1. Direct Variation: Write down three things that you know about direct variation problems. Give examples to support your ideas.
  2. Formula: Describe your favorite mode of transportation. Then write a problem using the formula d=rt and your favorite mode.
Study Guide
  1. ExamView Quiz: Direct Variation
  2. Prentice Hall Quiz
Other
HCPS 2002-