If the number in front of the x squared is negative, then the parabola will open upwards. The opposite occurs when the number is positive.
Is a parabola whose directrix is below its vertex.
The extreme point it the highest or lowest point of the parabola (depending if it is concave downwards or upwards). It is the point of the parabola tat is closest to the focus. the extreme point lies on the axis of symmetry.
Finding the vertex of the parabola is important because it tells you where the bottom (or the top, for a parabola that 'opens' downward), and thus where you can begin graphing.
open upward
Opening up, the vertex is a minimum.
If the sign of the term involving x2 is positive then it is concave upward, provided everybody agrees what concave upwards means. Just like y=x2 is concave upwards.
That's a point where the curve of a graph changes from "concave upward" to "concave downward", or vice versa.
The point when a curve changes from concave upward to concave downward is called the inflection point. It is the point where the curve transitions from being curved "upwards" to being curved "downwards" or vice versa. At the inflection point, the rate of change of the curve's curvature changes sign.
It can be either depending on its minimum value or its maximum value
It is a function because for every point on the horizontal axis, the parabola identified one and only one point in the vertical direction.
no concave mirror is in shape of concave mirror
Is a parabola whose directrix is below its vertex.
positive.
I think it's like this: x2+3x-5 So if the x2 part is a positive then it opens upward but if it's negative it goes downward.
Upward
The maximum.
UPWARD UPWARD UPWARD