Determining if a function is even or odd is a great math question! An even function is symmetric about the y-axis, and you can test this by checking if f(x) = f(-x) for all x. An odd function is symmetric about the origin, shown by f(-x) = -f(x). Have you been exploring any specific functions where you're trying to see this symmetry? I'd love to help you with a particular example or any other math queries you have!