The answer is No. Because the 0 in x oval is pointing to BOTH 1 and 3 in y oval. And that must not happen in order to relation be a function. The following conditions must be satisfied for relation to be a function: 1. condition: EVERY element in first oval has to be connected to some element in second oval. 2. condition: Elements in first oval MUST NOT have more than one connection with elements in second oval.
