Reciprocal Functions are a great introductory topic with graphing rational functions. This is typically where I start out with my Rational Unit. With Reciprocal Functions, we discuss writing equations and graphing the functions. This set of cards can help with the "forward" or "backward" motion of reciprocal functions but will regardless, help solidify the skill of understanding reciprocal functions.
Included are 10 graphs and equations that are ever so slightly different truly assessing whether your students understand the concepts of reciprocal functions.