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OpenStudy (anonymous):
How do you know if a parabola opens up or down from equation?
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OpenStudy (anonymous):
If the x in the equation is negative or positive
OpenStudy (anonymous):
negative it opens down positive it opens up
OpenStudy (anonymous):
So for something like x squared -8x+12 it would open up since x squared isn't a negative?
OpenStudy (anonymous):
yep, and also if you search online for graphing calculators those are very useful with problems like these
OpenStudy (anonymous):
Yea i'm on one it's just that I wasn't all that sure right now. Thanks though!
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