Equation: 5+(x-1)^2 Example: Rainbow
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A parabola opening up has a minimum, while a parabola opening down has a maximum.
It is the bisector of any 2 parallel chords drawn to the parabola. It is always parallel to the axis of the parabola.
All of the points on a parabola define a parabola. However, the vertex is the point in which the y value is only used for one point on the parabola.
Instead of the answer being a curve, it is a region. For example, if y > x2 + 4, the answer is not the parabola y = x2 + 4. Instead it is the region above the parabola (as if the bowl were filled with something.)
A parabola's maximum or minimum is its vertex.