Math Medics
S.o.s. Math: On Inverse Functions With Restricted Domains
Offers a step-by-step explanation of a one-to-one function problem on inverse functions with restricted domains, clearly using the horizontal line test. Includes sample problems.
Math Medics
S.o.s. Math: Inverse Functions With Restricted Domains
This math lesson allows you to look at inverse functions to decide which parts are one-to-one and which parts are not one-to-one.
Khan Academy
Khan Academy: Determine if a Function Is Invertible
Given the table of values of a function, determine whether it is invertible or not by examining its domain. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints.