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For parabolas, if b 2 - 4ac = 0 andthenclarify what the graph looks like, including the way it can open, the location of the

For parabolas, if b²- 4ac = 0 andthenclarify what the graph looks like, including the way it can open, the location of the vertex, where it hits the x-axis and where it hits the y-axis.

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