Solving Quadratics Graphically

One of the many methods of solving quadratic equations is graphing. A video lesson first demonstrates graphing a quadratic function using an input-output table. After graphing the parabola, the instructor makes the connection between the solutions of the equation and the x-intercepts of the graph.

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CCSS: Adaptable
Instructional Ideas

  • Pose the video as a resource for those needing additional instruction
  • Follow the lesson with practice solving quadratic equations by graphing
Classroom Considerations

  • Assumes previous experience with graphing quadratic functions
Pros

  • Offers several examples with both integer and decimal solutions
  • Emphasizes the relationship between x- and y-values of the graph and the equation
Cons

  • None