### Home > PC3 > Chapter 4 > Lesson 4.2.2 > Problem4-74

4-74.

Compare and contrast $j(x)=\frac{x}{x+2}$ and $k(x)=\frac{x^2-2x}{x^2-4}$. How are the functions similar? How are they different?

$k(x)=\frac{x(x-2)}{(x+2)(x-2)}$

Graph each of the functions and compare them. Be sure to consider the locations of any discontinuities.