Parabola Coefficients

Experiment with the coefficients of f(x)=ax^2+bx+c.

What is the path (locus) of the vertex of the parabola as b changes?

Sorry, the GeoGebra Applet could not be started. Please make sure that Java 1.4.2 (or later) is installed and active in your browser (Click here to install Java now)

bic, Created with GeoGebra