Practice Finding the Vertex of a Quadratic in General Form

GeoGebra Dynamic Worksheet
Enter the x coordinate of the vertex in the box. When it is correctly entered, the word "correct" will appear.
Enter the y coordinate of the vertex in the box. When it is correctly entered, the word "correct" will appear.
Check the boxes for hints. Click on the blue refresh icon in the top right corner to generate a new function.

Brothen, 4 July 2013, Created with GeoGebra