Simple general quadratic

Simon Clay
This is a simple applet which aims to help familiarise you with what happens to the graph of a quadratic as the values of the coefficients are varied.
- Explore what happens to the graph as you change each of the sliders. Which features of the graph change and which remain the same? - Predict what will happen to the position of the vertex as each slider value is changed in turn. Reveal the vertex, A, to test your conjecture. - Change one slider so that the graph touches the x-axis. - For what range of values for a, b and c does the graph have 2 real roots?