Identifying functions from relations V Relation 1 Relation 2 Domain Range Domain Range u -2 e 2 8 e b W n O Function O Not a function O Function O Not a function Relation 3 Relation 4 Domain Range Domain | Range g pencil 2 -2 desk -2 3 e pencil 2 7 S rock 2 -6 desk O Function lake O Not a functionThe function fis defined as f (x) = 2x- +4. Find f (x + 6). Write your answer without parentheses, and simplify it as much as possible. f (x +6) = 1 X 5