Then we used https://www.desmos.com/calculator to verify the vertex and graphs we made on WS Practice B. We completed 1 and 2. We found the vertex (h, k) first by identifying the h and k in the equation. Then we used the a-value for the direction of opening and the proper steepness.
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: Students are to complete 3 - 6 on Practice B (we did 1 & 2 in class). Use desmos to check your work.