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Based off of the standard form of a parabola how do you know if it opens down or uo
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Based off of the standard form of a parabola how do you know if it opens down or uo

User Tuhin Kanti Sharma
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The standard form of a parabola is y=ax²+bx+c,
If the coefficient "a" is positive (a>0) the parabola is open up
and if a<0 (negative) it opens down
User Daniel Michelfelder
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3 votes
If the coefficient of x^2 is positive it opens upwards. Negative coefficient of x^2  downwards
User Matthew Rhoden
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