What's the relationship between a parabola's vertex and its maximum or minimum values? Can a parabola have both a max and a min value?

Question

dumbcow · Answer

no cant have both
if leading coefficient is pos ... vertex is min
if leading coefficient is neg ... vertex is max

zzelinski · Answer

Why can't a parabola have both?

dumbcow · Answer

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by definition of its shape...there is a absolute low point which is the min
the arrows go up forever without ever turning down again so there is no max value