Click on the blue point and drag it to change the figure. Click on the check boxes to show different functions.
A function is even if, for every x, f(x)=f(x).
 Manipulative 1  Even Function Created with GeoGebra. 

A even function is a
function
which, for any value of x
. ^{[1]}
Even functions are symmetrical about the yaxis.
Manipulative 1 shows functions that are even. Manipulative 2 shows functions that
are not even. Click on the check boxes in the
manipulatives to see different examples. Click on the check
box again to uncheck it. Click on the blue points in the manipulatives and drag them to
change the figures.

Click on the blue point and drag it to change the figure.
For which point does f(x) = f(x)
 Manipulative 2  Example of a function that is NOT even Created with GeoGebra. 
