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ALEX Lesson Plans  
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Subject: Mathematics (9 - 12)
Title: Building Functions:  Inverse Functions from Tables and Graphs
Description: This lesson will lead students on a guided discovery to find the inverse of a function given the graph or a table of values. Students will relate the inverse of a graph to finding the reflection of the graph over the line y=x. They will identify characteristics of functions whose inverses are also functions (One-to-One Functions) and will be introduced to the horizontal line test. Students will also apply their knowledge of a graph to a table of values to determine if the table represents a One-to-One Function. This lesson results from the ALEX Resource Gap Project.