freeCodeCamp/guide/english/mathematics/the-vertex-of-a-parabola/index.md

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2018-10-12 19:37:13 +00:00
---
title: The Vertex of a Parabola
---
## The Vertex of a Parabola
The vertex of a parabola is the lowest point or the highest point (if the parabola is upside-down) of the parabola. This is the point where the slope changes from positive to negative or vice versa. For a given quadratic y=ax^2+bx+c, the vertex (h,k) is found by computing h = -b/2a and evaluating y by plugging in h.
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