Question

Is the relation a function?

{(14, 15), (5, 7), (3, 10), (11, 1), (5, 8)}

Answer 1

u can see each element of x {14,3,11}
has only one element in y{15,10,1}
except 5 it has 2 element in y{7,8}
so its not " one to one " function

Answer 2

no, it's not a function. each domain doesn't have their own range. which would make it a function if it did.
Simple as that.

Answer 3

that's what @ikram0025 was trying to say, yeah.

Answer 4

Thank you :)

Answer 5

Welcome!^^