Exer. 18: Find the number.

Vocab Examples WEEK 1 1 .1-1.5 FUNCTIONS A ND FUNCTION NOTATION (1.1) 1. Function: A rule for a relationship between an input and an output quantity in which each input value niquely determines one output alue. (you test this with the vertical l ine test) a. Example: 2. One-to-one function:Sometimes in a relationship each input corresponds to exactly one output, and every output corresponds to exactly one input. (you test th ith t he horizontal line t est) a. Example: