This worksheet contains 30 practice questions about graphically recognizing inverse functions. The students must examine each diagram, and then decide if the diagram / graph represents an inverse function. The worksheet comes in two formats: All 30 questions on one page, or the 30 questions spread out over two pages, with 15 questions on each page. This second format is similar to the format of another of my products, "Math Worksheet 0045 - Reference Angle", which has been downloaded many times.