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Axis of Symmetry of a Parabola

Axis of Symmetry of a Parabola

The line passing through the focus and vertex of a parabola. The axis of symmetry is perpendicular to the directrix.

 

Example:  

Graph of upward-opening parabola with vertex at (3,-2), focus above vertex, vertical axis of symmetry at x=3, and horizontal...

This is a graph of the parabola Equation of a parabola: y = (1/4)x² − (3/2)x + 1/4 with all its major features labeled: axis of symmetry, focus, vertex, and directrix.