y = a(x - h)^2 + k; where (h, k) is the vertex. We also discuss the axis of symmetry as it will always pass through the h value. So the axis of symmetry is x = h. We completed 6 graphs together. Summary of steps:
1. Identify the vertex and plot it.
2. Identify the axis of symmetry, sketch it in with dashed lines.
3. Use the a-value to get 2 more points. The "a" will tell you how much to move up when you move 1 unit to the right of the vertex. Remember if a is positive the parabola opens up; if a is negative it opens down.
4. Based on your graph, choose a convenient x-value to evaluate. Plot that point and its reflection point.
5. Connect the 5 points to create the parabola.
We also complete Problems 1 & 2 in Practice A.
Students turned in their WS 4.1 Transformations of Quadratics packet.
Students were given WS 4.1 Reteaching which summarized the graphing process.
Use the link for review/practice
https://www.khanacademy.org/math/algebra/quadratics/solving_graphing_quadratics/v/graphing-a-parabola-in-vertex-form
https://www.youtube.com/watch?v=y99lNRqLjBA
https://www.youtube.com/watch?v=vpTvNFXvj38 (just first 8 minutes)
HW: Complete Problems 3 & 4 in Practice A. Complete WS 4.1 Reteaching and WS 4.1 Vocab Support (in your quadratics packet we worked on today)