Unit G Summary Question #8 y-intercepts of rational functions

To describe the y intercept of a rational function, we first need an example.                                        For example, x^2-4/x^2-1. We all know that in order to find the y intercept of anything, we must first plug in zero to EVERYTHING! Here, if we do that, we get 4/1 which is 4 and our y intercept is 0,4. Basically, in this case, you divide the constants numerator over denominator. It can be done both in the original equation or the simplified equation because you would still have to plug in zezro to find your y.