Which of the following lists of ordered pairs is a function? A. (0,4),(1,2).(1,0). (2,3) B. (1,7).(2,5),(3,6), (4,1) C. (3,-2).(2-1).(3,4),(4,7) D. (2,5), (3,8). (4, 11),(4,12)
When looking at cordinate points for functions, to be a function, the X-Values cannot come up more than once. B is the only one where there is no repeating X-value, so it is a function.
