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Is a horizontal parabola a function?

Updated: 4/28/2022
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12y ago

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No. Because apart from its apex, any point on the x-axis is mapped to two points - one above the x axis and one below. A function cannot be a one-to-many mapping.

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12y ago
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Q: Is a horizontal parabola a function?
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What is a parabola that opens to the right called?

It is a square root mapping. This is not a function since it is a one-to-many mapping.


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In the formula for calculating a parabola the letters h and k stand for the location of the vertex of the parabola. The h is the horizontal place of the vertex on a graph and the k is the vertical place on a graph.


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