is the following relation a function? Yes or no

Answer:
yes
Step-by-step explanation:
the line is in -1 in all 4 quadrants, I will say yes but I'm not sure
Answer:
the following is not a function
Step-by-step explanation:
the following is not a function because in order for it to be a function none of the x values can repeat and the x values repeat therefore it is not a function