Consider the following premises. p_9 <-> q_9. q_9 or ~q_2. Can we infer q_2 -> p_9 from them? If possible, name the inference rules being used at each step.
 From p_9 <-> q_9 we can infer q_9 -> p_9 via biconditional elimination. From q_9 or ~q_2 we can infer q_2 -> q_9 via rewriting. Finally, from q_2 -> q_9, q_9 -> p_9 we can infer q_2 -> p_9 via transitivity. Therefore, the answer is yes.