There are two ways of classifying parabolas:
By the direction in which they are open: open at the top or at the bottom.
By the number of real roots: 2 real, 1 real or no real roots.
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Parabolas have directori.
McDonalds Arches
The form is not specified in the question so it is hard to tell. But two parabolas with different vertices can certainly have the same axis of symmetry.
in: algebra