Algebra
Intermediate

Parabola Vertex

x-coordinate of the vertex of a quadratic.

Formula

x=−b2ax = -\frac{b}{2a}

Variables

a,bQuadratic coefficients

Example

For x²-4x: vertex at x=2

Did You Know?

A parabola's vertex marks its highest or lowest point — the reason satellite dishes and headlights use parabolic shapes.

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