Question 1057751
Check the value of {{{x^2+y^2}}}.
If it equals 5, it's on the circle. 
Less than 5, it's in the interior of the circle.
Greater than 5, it's in the exterior of the circle.
I'll do the first, you do the rest.
A) {{{(-1)^2+(1)^2=1+1=2}}}, interior.