There are a number of ways your instructor can set up their class and gradebook in Quest. The most contentious of them involves accruing negative points on questions with wrong answers. In response to a request from the UT Student Senate, the default setting for new Quest courses utilizes a Zero-Floor grading scheme (No Negative Points).
However, your professor still has the option to reinstate negative points for an assignment if they choose. Some instructors prefer this accrual of 'negative points' method of grading to dissuade students from answering a question by guessing. However, we realize how frustrating it can be to be honestly working through a problem and find that each time you re-try a question a negative score builds up (just know you will never be given a negative score on an assignment). In these cases, we highly recommend attending office hours, or seeking a study group to help check each other's work, in order to give each attempt the best possible chance of being correct.