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Symmetry of Functions

Symmetry Parabola

Symmetry Parabola

The function $y=x^2+4x+3$ shows an axis of symmetry about the line $x=-2$.  The curve is split into $2$ equivalent halves.  Notice that the $x$-intercepts are reflected points over the axis of symmetry and are equidistant from the axis. 

Source

    Boundless vets and curates high-quality, openly licensed content from around the Internet. This particular resource used the following sources:

    "Symmetry Parabola.jpg."
    http://cnx.org/contents/E6wQevFf@5.241:-Sm9he1Q@12/Quadratic-Functions Openstax CC BY-SA 3.0.
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