What can be inferred from the following premises in a single inference step (ignoring inferences that add new predicates or constants)? Name the inference rule being used: For all y, if y plays tennis, then y is excited. Jessica is not playing tennis. For all y, y is excited if and only if y will play tennis.
For all y, if y were excited, then y is playing tennis can be inferred via the universal biconditional elimination rule. For all y, if y plays tennis, then y is excited can be inferred via the universal biconditional elimination rule.