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In classic geometry, it opens down when the directrix is above the focus.
In analytical (coordinate) geometry, if the equation of the parabola is
y = ax^2 + bx + c, it opens down if a < 0.
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In which direction does the parabola?
A parabola can open left, down, right, or left on a graph, if that's what you mean:\
What equation describes a parabola that opens up or down and whose vertex at the point (hv)?
This is called the 'standard form' for the equation of a parabola:y =a (x-h)2+vDepending on whether the constant a is positive or negative, the parabola will open up or down.
if the parabola open upward a is?
positive.
What way does the parabola open if a is greater than 0?
If a is greater than zero then the parabola opens upward.
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.
Is it true graph is reflected about the x-axis and the parabola opens down?
No. A parabola can open up or down.
The equation below describes a parabola. If a is negative which way does the parabola open y ax2?
Down
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
In which direction does the parabola?
A parabola can open left, down, right, or left on a graph, if that's what you mean:\
Which way does a parabola open when the coefficient of its x2term a is negative?
DOWN!
When does a parabola open down?
No, a parabola is the whole curve, not just a part of it.
Does the parabola open up or down?
It does both depending if it is positive or negative
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.
The equation y -3x2 describes a parabola. Which way does the parabola open?
The given terms can't be an equation without an equality sign but a negative parabola opens down wards whereas a positive parabola opens up wards.
What makes a parabola a parabola?
A parabola is a quadratic figure. It is an intersection of a right conical surface, a plane parallel to a generating straight line of the surface. Basically, it's an arc shape. It can open up, down, left, or right.
The maximum or minimum of a parabola depending on whether the parabola opens up or down?
A parabola opening up has a minimum, while a parabola opening down has a maximum.
if the parabola open upward a is?
positive.
