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

Answer: Using a quadratic function you can find out how many roots that the parabola has. The roots represent where the parabola crosses the x-axis. There is a possibility of two answers, one answer, or imaginary answers! If there is only one answer, the vertex rests on the x-axis. If there are two answers the parabola's vertex is above or below the x-axis and crosses the x-axis. If there are no answers, or imagianary numbers, the vertex is below or abovethe x-axis but does not cross it. You can also find the vertex of the parabola using different equations.

Parabola in everyday life!