Chapter 9‎ > ‎

9.2A Solving Quadratic Equations by Graphing

Standard:

  • A.REI.4b: Solve quadratic equations by inspection, taking square roots, completing the square, the quadratic formula, factoring, and graphing as appropriate to the initial form of the equation.
  • F.IF.7a: Graph linear and quadratic functions and show intercepts, maxima, and minima.   

Essential Questions:

  • How are quadratic functions used to model, analyze, and interpret mathematical relationships?
  • What are the different ways to solve a quadratic equation, and when is each appropriate?

Learning Targets:

  • I can graph a quadratic function and calculate the x-intercepts

Warm-Up:
     
  • https://docs.google.com/document/d/1htr4ExzsaObRNid40QhWEPxOMqRYM9-p8EK_kmVUKjA/edit?usp=sharing

Notes: 

Click on the image below for the PDF of the notes 9.2A Solving Quadratic Equations by Graphing
  • https://drive.google.com/file/d/0B7PRmllaLVfFZHhIenhHSmNkbUE/view?usp=sharing

Video:

Click below for the Classroom Lesson -  9.2A Solving Quadratic Equations by Graphing
  • https://drive.google.com/file/d/0B7PRmllaLVfFQjVSbHJMcWNqOGM/view?usp=sharing

Watch this video on Solving Quadratic Equations by Graphing
  • Embed gadget




Watch this video on Solving Quadratic Equations by Graphing
  • Embed gadget



Watch this video on Solving Quadratic Equations by Graphing Using a Graphing Calculator
  • Embed gadget


Activities:

Click on the image below for an activity -  Solving Quadratic Equations by Graphing
  • https://www.ixl.com/math/algebra-1/gcf-of-monomials

Click on the image below for a review -  Solving Quadratic Equations by Graphing
  • http://www.softschools.com/quizzes/algebra/finding_the_greatest_common_factor_gcf_of_two_or_more_monomials/quiz5018.html

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


Assessment/Homework:
pg. 540 11,15,17,28,36
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