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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.

1. ExamView Quiz: Solving Literal Equations

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*

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*
5. Interactive Notes: Direct Variation - lessons and practice problems at Regentsprep.org

1. Direct Variation Worksheet (doc)
2. Glencoe PWS (pdf)
3. Glencoe SG (pdf)

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.

1. ExamView Quiz: Direct Variation
2. Prentice Hall Quiz