Hey, i'm relatively new to the forums...just a little curious on how to solve this proof.

1. Determine whether f:ZXZ->Zis onto if...

a) f(m , n) = 2m-n

c) f(m , n) = m+n+1

note:Zrepresents integers.

i) Determine if the function is Injective (one to one).

ii) Prove 1a.

iii) Determine if the function is Surjective (onto).

iv) Prove 1c.