Question

Will fan and medal! Identify the transformations that describe the graph of an even function select all that apply.
1.) reflection over the X axis
2.) reflection over the Y axis
3.) reflection of the line Y = X
4.) 90° rotation around the origin
5.). 180° rotation around the origin

Answer 1

2 is the only right answer.  If it has right/left symmetry, then f(-x) = f(x), meaning it's even.  
extra info: 3 and 4 are the same thing
5 works for odd functions (like sin(x))