2.1: Relations and Functions

Question 1

Relation

Answer 1

a set of pairs of input and output values

Question 2

Domain

Answer 2

of a relation is the set of all inputs

Question 3

Range

Answer 3

of a relation is the set of all outputs

Question 4

Mapping Diagram

Answer 4

Links the elements of the domain with corresponding elements of the range

Question 5

Function

Answer 5

a relation in which each element of the domain is paired with exactly one element of the range

Question 6

Vertical Line Test (VLT)

Answer 6

a test to determine if a relation is a function

Question 7

Function Notation

Answer 7

an equation in the form of ‘f(x)’