10. Which of the following sets of ordered pairs describe a function?

A. {(2, 2), (3, 2), (4, 2), (5, 2)}
B. { (-2, 0), (0, -2), (0, 2), (2, 0))
C. {(0, 0), (2,-2), (2, 2), (3, 3) }
D. {(2, 3). (2, 4), (2, 5), (2, 6) }

11. Which of these graphs represents a function?

12. Determine whether the relation is a function, identify the domain and range, if it is a function input Output 15 18 16 19 18 7 10 11

A. It is not a function
B. It is a function, D: {5,6,7,8), R: {8, 9, 10, 11}
C. It is a function,
D: (5, 6, 7, 8), R: {8, 9, 10} D. It is a function, D: (8, 9, 10, 11), R: {5, 6, 7, 8} 13. Give the domain and range of the relation {(2, 2).(-3,-3).(-6, -6). (6,6) }) A. domain: {2, 6); range: {-6, -3} B. domain: {-6, -3}; range: ​