Lesson Plan

Define a function as a rule that assigns to each input exactly one output

Determine whether a given relationship (table, set of ordered pairs, graph, or verbal description) is a function or not a function

Represent a function as a set of ordered pairs and plot those pairs on a coordinate plane

Apply the vertical line test to determine whether a graph represents a function

Explain in their own words why a relationship that assigns two different outputs to the same input is not a function

8.F.A.1

8.F.A.1: Understand that a function is a rule that assigns to each input exactly one output. The graph of a function is the set of ordered pairs consisting of an input and the corresponding output. (Function notation is not required in Grade 8.)