SOLUTION: How can you tell if a parabola opens up or down from the formula only?
Algebra.Com
Question 797230: How can you tell if a parabola opens up or down from the formula only?
Answer by solver91311(24713) (Show Source): You can put this solution on YOUR website!
Given:
\ =\ ax^2\ +\ bx\ +\ c)
opens upward
opens downward
no parabola
John
Egw to Beta kai to Sigma
My calculator said it, I believe it, that settles it
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