**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.
**Standard(s): **

[MA2015] PRE (9-12) 22: (+) Read values of an inverse function from a graph or a table, given that the function has an inverse. [F-BF4c]

**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.