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OpenStudy (anonymous):
how can you determine if a parabola opens up or down?
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OpenStudy (kainui):
It depends on the sign in front of the squared term. If it's negative it's down and positive it's up. This is because when you square something, it's always positive.
OpenStudy (precal):
+ means up - means down
OpenStudy (anonymous):
If you see it the arrows will be up, or down, or plug it into a calculator, under the Y= table and push graph it will show the arrows for u
OpenStudy (precal):
look at the graph
OpenStudy (precal):
|dw:1403962543096:dw||dw:1403962551892:dw|
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OpenStudy (precal):
|dw:1403962566538:dw|
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