Question

is this a function or relation?

(3,1), (3,2), (3,3), (3,-2), (3,0)

Answer 1

no it's not a function

Answer 2

if we define the first components to be inputs; and the second components to be output; then this is not a function

Answer 3

If one input has more than one output, its not a function by definition

Answer 4

Exactly because a function is defined as being one to one

Answer 5

not one to one perse; unless im misunderstanding the vernacular

Answer 6

many to one is fine, one to one is invertible; but one to many is not a function

Answer 7

Hmm, I thought I remebered the def being that. Oh well

Answer 8

x^2 is a function, but it is not one to one

(-2)^2 = (2)^2 = 4

Answer 9

Ahh yes you are very much so correct, makes more sense that way :)