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The vertex is not affected by the direction that the parabola is facing. The vertex is the place where the two sides of the parabola meet. It is in the middle divides the shape in half.
If you picture yourself looking at a bowl from the side and then imagining it as two dimensional, it would look like a parabola but for all of the filled in parts of the graph and the fact that the sides of the bowl don't continue on forever. The vertex is the bottom of the bowl, where the sides meet.
You measure a vertex as you would a point; with a coordinate.
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Earn +20 ptsQ: When a parabola opens downward the vertex is the what value?
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To find the value of a in a parabola opening left or right subtract the x value of the parabola at the vertex from the x value of the point on the parabola that is one unit the vertex?
Above
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
The vertex of this parabola is at 3 -2 When the x-value is 4 the?
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The vertex of this parabola is at 2 -4 When the x-value is 3 the?
3
Is the vertex of a parabola occurs at the minimum value of the function?
Yes if it is positive
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