You know if something is a function or not because the X will never be used twice in a set. If it is, then it's not a function.
A. Uses -1 twice
B. Uses Nothing twice (good)
C. Uses 0 twice
D. Uses 0 twice
B is your answer
820
bc it is not 825 or higher it stays the same
R would equal -189, there is step by step in the picture
Answer:
1=125
2=55
3=55
4=125
5=125
6=55
7=55
8=125
Step-by-step explanation:
you can only see values of 
Ranging from $-3$ to $3$ and they're included, so domain is $[-3,3]$
and $y$ values ranging from $-2$ to $4$ but $-2$ is not included so range is $(-2,4]$
