Consider the following premises. For all y, y is bored or y will not take a plane. For all y, y will take a plane or y is not bored. Can we infer the following from them? If Linda were bored, then Linda is taking a plane.
 From the fact that for all y, y is bored or y will not take a plane we can infer that for all y, if y takes a plane, then y is bored. From the fact that for all y, y will take a plane or y is not bored we can infer that for all y, if y were bored, then y is taking a plane. From the fact that for all y, if y were bored, then y is taking a plane, and that for all y, if y takes a plane, then y is bored we can infer that for all y, y is bored if and only if y will take a plane. From the fact that for all y, y is bored if and only if y will take a plane we can infer that Linda is bored if and only if Linda is taking a plane. Finally, from the fact that Linda is bored if and only if Linda is taking a plane we can infer that if Linda were bored, then Linda is taking a plane. Therefore, the answer is yes.