Determine if the rational function is even or odd

The video tutorial explains how to determine if a function is even or odd by substituting negative X into the function. It defines even functions as those that return the original equation when negative X is substituted. The tutorial also explores the graphical representation of even functions, highlighting their symmetry about the Y-axis. Examples are provided to illustrate these concepts, emphasizing that even functions yield the same value for both positive and negative inputs of X.

What example is given in the text to illustrate an even function?

Summarize the relationship between algebraic and graphical representations of even functions as described in the text.