Review Functions

Function A function is a special type of relation in which each element of the domain is paired with exactly one element of the range.

Ordered Pairs (2, 5), (-3, 6), (3, 4), (-6, 9), (4, 2) (3, -2), (-5, 6), (2, -2), (-5, 3), (4, 0) Determine if the relation is a function

Graph Use the vertical line test to determine if the relation is a function

Mapping

Discrete and Continuous

(2, -2), (0, 4), (3, 4), (-1, 2) y = 3x +2

Function Notation Given f(x) = x 2 + 2x – 1, find f(2). f(2) = (2) 2 +2(2) – 1 = – 1 = 7 Given f(x) = x 2 + 2x – 1, find f(–3). f(–3) = (–3) 2 +2(–3) – 1 = 9 – 6 – 1 = 2

Domain and Range State the domain and range (2, -2), (0, 4), (3, 4), (-1, 2)

Domain and Range State the Domain and Range

State the Domain and Range