The Discriminant

Students learned about the discriminant and how this part of the quadratic formula can help with graphing parabolas. Specifically, you can use the discriminant to help you figure out how many times the parabola will cross the x-axis. If the discriminant is greater than 0, the parabola will cross the x-axis twice. If the discriminant is zero, the parabola will touch the x-axis just once. If the discriminant is less than 0, the parabola will never cross the x-axis.

Please refer to pages 180-181 in the Home Book for more information on this topic.

Tonight's Homework: Home Book page 182 (1-15, 18-24 even, and 43-44).