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3.4 Direct Variation

Standard(s):

  • F.LE.A.1: Distinguish between situations that can be modeled with linear functions and with exponential functions.        
  • F.LE.A.1.A: Prove that linear functions grow by equal differences over equal intervals, and that exponential functions grow by equal factors over equal intervals.
  • F.LE.A.1.B: Recognize situations in which one quantity changes at a constant rate per unit interval relative to another.

Essential Question:

  • When does a function best model a situation?

Learning Target:

  • I can define a direct variation equation. (Knowledge)
  • I can identify a direct variation from an equation or a graph. (Comprehension)
  • I can graph a direct variation equation. (Synthesize)
  • I can write an equation for a proportional relationship. (Synthesize)
  • I can write an equation for a non-proportional linear relationship. (Synthesize)

Warm-Up:
     
  • https://docs.google.com/document/d/1WRR44vkWtvFdXpScgviSe9mYhEaHuaRfvhkr-fFITsU/edit?usp=sharing


Notes: 

Click on the image below for the PDF of the notes 3.4 Direct Variation
  • https://drive.google.com/file/d/0B7PRmllaLVfFTXNZOUtVZGE2SVk/view?usp=sharing


Video:

Click below for the Classroom Lesson - 3.4 Direct Variation
    • https://drive.google.com/file/d/0B7PRmllaLVfFVUI2TDc4TVBtXzA/view?usp=sharing

    Watch this video on Direct Variation

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    Watch this video on Direct Variation

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    Activities:

    Click on the image below for an activity - Direct Variation Practice with Geogebra.
    • https://sites.google.com/a/nwoi3.org/algebra-1-eunits/eunit-2---univariate-equations/2-3/2-4/Activity.PNG
    Click on the image below for an activity - IXL Practice
      https://sites.google.com/a/nwoi3.org/algebra-1-eunits/eunit-2---univariate-equations/2-3/2-4/IXL.PNG


    Extra Help:
    Click on the image below for help 
    http://www.wolframalpha.com/

    Assessment/Homework:
    pg. 183 10-32 even
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