Grade 10 Quadratic Formula and the Discriminant

I begin this lesson by, once again, explaining the difference between a quadratic Function (think y = ax^2 +bx +c) and a quadratic Equation (think ax^2 +bx +c = 0) The Function has x-intercepts or zeros; the Equation has roots.
We then use the Quadratic Formula to find the x intercepts for two functions and the zeros for an equation.
I also discuss the DISCRIMINANT D = b^2 - 4ac and how it can be used to determine the number of solutions.

Here is the handout I promised in the video:
http://mshavrot.pbworks.com/f/....QUADRATIC%20FUNCTION