#1. Which of the following is the domain of the function {(3, 6) , (5, 7) , (7, 7) , (8, 9) }? {3, 5, 7, 8}. {6, 7, 9}. {(6, 3) , (7, 5) , (7, 7) , (9, 8) }. {1, 3, 5, 7, 9}. #2. Is the following relation a function? {(0.3, 0.6) , (0.4, 0.8) , (0.3, 0.7) , (0.5, 0.5) } . A) yes. ?B) no. C) cannot be determined