Find the x and y intercepts for the graphs of the relationships in problem 1-78 please help !!

Answer:
A:not a function because the vertical line crosses the point more than 1 time
B:not a function because the vertical line crosses the point more than 1 time
C:not a function because the vertical line crosses the point more than 1 time
D:function because the vertical line crosses the point only 1 time