Maybe you should work on starting you're sentences.
Answer:
x=-1/10
y=(-1/10)x0.5
so that y=-1/5
Step-by-step explanation:
I'm assuming this is multiple choice and you forgot to post the answers. I'll take a guess and say it probably looks something like this:

Because you can't take the square root of a negative number without getting an imaginary result, resulting in the function having a closed domain limit.