Tim

Page history last edited by PBworks 4 years, 2 months ago

Name: Tim

Question: What can you tell about the graph of a quadratic function based on the roots you get from solving the quadratic formula for the equation?

Answer: The quadratic formula http://youtube.com/watch?v=43JvqjHtFXQ&feature=related will tell you how many x-intercepts you have. There are different types of roots, using the discriminant Formula you can determine the type of x-intercepts of a graph (if the graph has any). If d is positive d>0 then there are 2 different real roots, or 2 different x-intercepts. If d=0 then there are 2 roots or x-intercepts that are equal. If d is negative d<0 then there are 2 different complex roots, and no x-intercepts.