Parabola - Axis of Symmetry - Using X Intercepts and Using 2 Points With Same Y Coordinate

Описание к видео Parabola - Axis of Symmetry - Using X Intercepts and Using 2 Points With Same Y Coordinate

We learn how to find the equation of a parabola's axis of symmetry using its x intercepts, also called its zero or roots. The method is explained with several examples.

If a parabola cuts the x axis at x = p and x = q then the axis of symmetry has equation:

x = (p+q)/2

We also see that the axis of symmetry can be found using any two points on the parabola, provided they have the same y coordinate.

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