Relations and Functions Domain Range One to One Onto

The number of functions from {1,2,3} to {a,b} is

• 6

• 8

• 64

• 9

The number of onto functions from{1,2,3} to {a,b} is

• 8

• 6

• 9

• 4

Which of the following relations is a one-to-one function?

• {(0,2), (0,4), (0,5), (0,6)}

• {(1,3), (4,3), (8,3), (3,1)}

• {(5,-1), (6,3), (1,2), (7,-8)}

• {(1,2), (3,4), (-1,-2), (1,5)}

• 1-1

• Onto

• Both

• Neither

Which of the following statements are correct? Select ALL that apply.

• Domain is the set of input (x)

• In a one-to-one function. two different inputs CANNOT share the same output,

• Onto means there is no extra possible output with no input.

• Range is the set of both input and output combined.

All of the x-values (or the set of ​​ (a)   values) are part of the​ ​ (b)   .

• output

• range

• input

• domain

• function

What is the domain of a relation? (a)  

• the set of all x-values

• the set of all y-values

Identify the domain and range, then determine if the relation is a function.

b

c

e

Not a function

Quadrant

Function

Range

Domain

What is the range of a relation? (a)  

• the set of all y-values

• the set of all x-values

Identify the domain and range, then determine if the relation is a function.

b

c

d

Range

Domain

Not a function

Quadrant

Function