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Earn +20 ptsQ: How do you tell if a parabola opens up or down?
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Is it true graph is reflected about the x-axis and the parabola opens down?
No. A parabola can open up or down.
What is maximum or minimum of a parabola depending on whether the parabola opens up or down?
Vertex
How do you find a parabola opening up or down?
If you can mash the equation for the parabola into the form Y = Ax2 + Bx + C, then the parabola opens up if 'A' is positive, and down if 'A' is negative.
How can you tell if a porabola is opening up or down using ax2 plus bx plus c?
If a is positive, then the parabola opens upwards; if negative, then it opens downwards.
Given the standard equation for a parabola opening up or down which way does a parabola open when the coefficient of the x2 term a is positiveUp or down?
In that case it opens upwards.
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