Answer:
i believe that it is a function.
Step-by-step explanation:
you do not have any of the exact same numbers with arrows ot one another.
Answer:
B
Step-by-step explanation:
Well since it is arthimetic sequence we know the formula
We know d is difference between second term and first so it will be -5- (-12)= -5+12= 7

the domain of this is 1,2,3,4.......
range is -12,-5,2,9.......
Therefore answer is B.