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Earn +20 ptsQ: How do you find a parabola opening up or down?
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To find the value of a in a parabola opening up or down, subtract the y-value of the parabola at the vertex from the y-value of the point on the parabola that is one unit to the of the vertex?
right
Given the standard equation for a parabola opening up or down which way does a parabola open when the coefficient of the x2term a is negative Up or down?
down
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.
Is y equals 3x2 -7x plus 2 an up or down parabola?
It is an up parabola.
Is it true graph is reflected about the x-axis and the parabola opens down?
No. A parabola can open up or down.
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