Graphing a quadratic function in vertex form with reflection

The video tutorial explains how a quadratic function with a negative sign inside the function reflects over the Y axis. It starts by setting up the problem and creating a table of values, showing that squaring any number results in positive values. The tutorial then discusses how multiplying by a negative number inside the function reflects the graph over the Y axis, resulting in the same graph as the original parabola. The video concludes by summarizing the transformation process and its effects on the graph.

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