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Once you calculate the X coordinate using the axis of symmetry (X=-b/2a), you plug that value in for all of the X's in the equation of the parabola. You then solve the equation for the value of Y.

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15y ago

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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?

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 right of the vertex.


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


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


What the the vertex of a parabola?

The vertex would be the point where both sides of the parabola meet.


How do you graph parabola given its vertex?

The vertex of a parabola doe not provide enough information to graph anything - other than the vertex!


What is the relationship of a vertex to a parabola?

The vertex is either the minimum (very bottom) or maximum (very top) of a parabola.


What is the vertex of a parabola?

the vertex of a parabola is the 2 x-intercepts times-ed and then divided by two (if there is only 1 x-intercept then that is the vertex)


The is the extreme point of a parabola and is located halfway between the focus and directrix?

The vertex -- the closest point on the parabola to the directrix.


Is knowing the coordinates of the vertex of a parabola enough to determine the domain and range?

i think that the range and the domain of a parabola is the coordinates of the vertex


What do you call the maximum or the minimum of a parabola?

A parabola's maximum or minimum is its vertex.


How do you find the vertex of the parabola y equals -4x2 - 16x - 11?

You would convert it to vertex form by completing the square. You can also find the optimum value as optimum value and vertex are the same.


What is the equation of vertex in parabola?

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