Question

Illustration 2 : Determine domain, co-domain and range of
f: A → N; f(x) = 3x + 1, where A = {1, 2, 3, 4}​

Answer 1

{ (1,4) , (2, 7), (3,10) , (4, 13)}

Domain is {1, 2, 3, 4}

Codomain is {4, 7, 10, 13}

Range is {4, 7, 10, 13}

Answer 2

Answer:

f(x) : 3x+1

put value A in f(x)

3(1) +1= 4

3(2)+1= 7

3(3) +1 =10

3(4) +1=13

Domain are (1,2,3,4)

Range are (4,7,10,13)