Page 2: Relations and Functions
This section explores the fundamental concepts of relations and functions, focusing on domains, ranges, and the distinction between discrete and continuous relationships.
Definition: A function is a relation where each input x−value corresponds to exactly one output y−value.
Example: The set {5,3, 4,2, 3.1,1, 4,0} represents a discrete relation.
Highlight: The vertical line test determines if a relation is a function - if a vertical line intersects the graph more than once, it's not a function.
Vocabulary: Domain represents input values, while range represents possible output values.