Chapter 8.1 vocabulary Relation Is a pairing of numbers or a set of ordered pair {(2,1) (3,5) (6, 3)} Domain: first set of numbers Range: Second set of numbers Input: Each number in the domain Output: Each number in the range X value Y Value

Objective 1: identifying the domain and range Identify the domain and range of the relation give to the left: Domain: Range:

Objective 1: identifying the domain and range Identify the domain and range of the relation give to the left: Domain: Range:

Identifying domain and range in a set of ordered pair [(1,5) (3,8) (5,11) (8,13)]Identify domain and range: Domain Range

Identifying domain and range in a set of ordered pair [(3,6) (5,13) (6,13) (9,15)]Identify domain and range: Domain Range

Objective 2: represent a relation Represent the relation in a graph and in a mapping diagram: [(-1,1) (2,0) (3,1) (4,5)] X values y values

Objective 2: represent a relation Represent the relation in a graph and in a mapping diagram: [(-2,5) (1,2) (3,5) (5,7)] X values y values

Objective 3: determining if a relation is a function using a mapping diagram Function: is when you have a RELATION that has ONE output for every input. [(3,6) (2,8) (4,9) (5,9)] [(2,1) (4,2) (3,3) (2,5)] [(4,7) (5,6) (8,9) (5,9)]

Determine whether the following are functions [(2,5) (5,7) (7,7) (9,8)][(4,6) (5,8) (7,9) (4,8)]

Determining if a relation is a function using the vertical line test

Is this a function:

Is this a function?

Practice What is my domain and range? 1.) [(9,3)(3,4)(5,8)(2,1)]2.) 3.) Is this a function? [(3, -2), (8, 1), (9, 2), (3, 3), (-4, 0)] Age (Years) Height (meters)

Homework Page 387 #’s 2-20 evens