The Basics
Below is important terminology for vertex form of parabolas!
Vertex
How do I Label this?
Use the vertex's coordinates! (x,y)
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Optimal Value (Max. / Min. Value)
The Maximum value is the highest point of the parabola while the minimum value is the lowest of the parabola. If the parabola has a max value, it will open downwards. If it has a min value, it will open upwards.
(x,y)
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Axis of Symmetry
(x,y)
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Y- intercept
How do I Label it?
Set your x at 0 and plug in the y value
(0,__)
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X- intercept / Zeroes
How do I Label it?
Set your y at 0 and plug in the x value
(__, 0)