Negative b over 2a Determines Line of Symmetry . . .

and also the x value of the vertex of a parabola. Students finished presentations today, and then we related the assignment to a portion of the quadratic equation. Students saw how the negative b over 2a portion of the equation related to the line of symmetry. Once the line of symmetry is found, plugging the x value into the original equation will give you the y value of the vertex. Oh, how sweet is that?

Tonight's Homework: Lesson 9.3 ( 24 - 43, last column only, and 72 - 74 ). By the way, we will be taking the 16th concept test on Thursday.