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Let the graph of the function

f : {0,1,2,3,4,5,6} → {0,1,2,3,4,5,6}

be given by the plot below.

Click on white pixels to change the graph of the function f.

f(x)
6
5
4
3
2
1
0
	0	1	2	3	4	5	6	x

The graph of the function f is

{ (x,f(x)) | x ∈ {0,1,2,3,4,5,6} } = {(0,0), (1,0), (2,6), (3,0), (4,0), (5,0), (6,0)}

The function f evaluated at the elements of its domain {0,1,2,3,4,5,6} is:

f(0)=0, f(1)=0, f(2)=6, f(3)=0, f(4)=0, f(5)=0, and f(6)=0.

The image of the function f is

f({0,1,2,3,4,5,6}) = { f(x) | x ∈ {0,1,2,3,4,5,6} } = { 0, 6}