Answer:
Ordered-pair answers include two coordinates separated by a comma and enclosed in parentheses. For example, (5,-2) and (2a,b) are correctly formatted ordered-pair answers.
When you enter an ordered-pair answer in the Edit Answer Definition wizard, you need to select an answer rule based on the type of equivalent answers you want the Player to accept as correct. When creating ordered-pair answers, you must select the checkbox The correct answer(s) are ordered pairs.
Explanation: