Math = Love: Solving Quadratics by Graphing

Tuesday, February 25, 2014

Solving Quadratics by Graphing

I'm still trying to get my Algebra 2 Quadratic Function Unit up in bits and pieces.  I required my students to demonstrate mastery with 5 different methods of solving quadratics.  I presented them in this order:

* Solving by Factoring
* Solving by Square Roots
* Solving by Graphing
* Solving by Completing the Square
* Solving by The Quadratic Formula

One of the first things we did after learning to graph quadratic functions was to discuss what it means to solve an equation.

Solve A Quadratic Equation INB Pages
We completed a Frayer Model for the phrase "Solve A Quadratic Equation."  

Solve A Quadratic Equation Frayer Model
This year, I am using the TI-Nspire graphing calculators with my Algebra 2 students.  As someone who was trained to use a TI-84 in high school and a TI-89 in college, this has been a big change for me.  But, I've learned to love the Nspire.  I have yet to decide which calculator I will use with my students next year as we transition to Common Core, however.  

I typed up these steps for my students to glue in their notebooks in case they forgot the process to find the solutions graphically.  We did four problems together as practice.    

Solving Quadratics by Graphing - INB Page

If you would like to download my Quadratic Function files, click here.


  1. Thank you so much for sharing! These are awesome step by step, detailed resources!