Maddymcg408go Maddymcg408go Mathematics Answered 9. Is the relation a function? Why or why not? {(3, –1), (3, 0), (–3, 4), (3, 8)} A. No; the relation passes the vertical-line test. B. No; three range values exist for domain value 3. C. Yes; three range values exist for domain value 3. D. Yes; only one range value exists for each domain value.