Answer:
The factor is multiplied by 3 for every input increased by 1
Step-by-step explanation:
(-3,2/3) (-1,6)
-3 to -1 is 2 steps
2/3 has to be multiplied by 9 in order to get 6
In 2 steps, a number is multiplied by 9
In one step, a number is multiplied by 3