Graphing Quadratic Functions by MathGroup (2)

This example demonstrates how to graph quadratic functions. The core mathematical concepts involved include the standard form of quadratic functions, vertex, axis of symmetry, and the direction of opening. The construction uses GeoGebra commands like Segment with objects such as k, a, h, V, Y, X2, X1, f_1, V_1, Y_1, X2_1, X1_1, text1_1, text1, f, b, A, n, B, m to show the dynamic changes of the function's graph and the positions of key points. It is suitable for high school students learning the properties and transformations of quadratic function graphs.