Answer: X=365/83 OR x= 4.39
Step-by-step explanation:
Answer:

Step-by-step explanation:

Answer:
first one: function
second one: not a function
third one: not a function
fourth one: not a function
Step-by-step explanation:
it is never a function if two of the x inputs are the same or if one x input has two y outputs..
<em>Hope this helps!! Pls mark me brainliest!!</em>