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OpenStudy (anonymous):
Determine whether the graph of y = 4x2 + 5x - 8 opens up or down and whether it has a maximum or minimum point.
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OpenStudy (anonymous):
as a>0 it's concave upward.
OpenStudy (anonymous):
the leading coefficient is positive so, this parabola opens up
OpenStudy (anonymous):
thus it has a minimum point
OpenStudy (anonymous):
it can only have a minimum and the minimum is ...
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