The graphs of y=x squared and y=-x suared. The origin is the lowest point on the graph of y=x suared and the highest point on the graph of y=x squared. The lowest or highest point on the graph of a quadratic function is called the vertex.

Keep it positive.

The graphs of y=x squared and y=-x suared. The origin is the lowest point on the graph of y=x suared and the highest point on the graph of y=x squared. The lowest or highest point on the graph of a quadratic function is called the vertex.

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