Quadratic Formula

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Questions:

1. Move the sliders so that a = 1, b = 4 and c = 3. What solutions are listed to the equation?

2. Leave a = 1 and b = 4, and move the last slider to c = 4. What solutions are listed to the equation?

3. Leave a = 1 and b = 4, and move the last slider to c = 5. What solutions are listed to the equation now?

4. Leave b and c constant, and slide a back and forth. Describe what happens to the solutions, and to the graph of the related function.

5. Leave a and c constant, and slide b back and forth. Describe what happens to the solutions, and to the graph of the related function.

Ward Roberts, Created with GeoGebra