The table of values shown below represents a linear function. Which of these points could also be an ordered pair in
 the table, and why?
 х
 9
 0
 3
 3
 7
 6
 11
 12
 19
 у
 15
 3
 (18, 27), because the rate of change of the function is 7
 4
 (18, 27), because the rate of change of the function is 3
 3
 (27, 18), because the rate of change of the function is 7
 4
 (27, 18), because the rate of change of the function is 3