I always have a difficult time answering these kinds of questions because

A: I'm not sure how to graph these kinds of questions, and

B: The clock is ticking down, so I wouldn't have time to graph anyway.

The assumption is obvious in both questions, it's just that when I get to eliminating all but 2 answer choices, I often pick the falsely negated AC. Is there a way I can improve my ability to spot the incorrect answer in this situation without spending 3+ minutes graphing? Any helpful tips/techniques? Thank you very much!