Answer
Refer below answer.
Work Step by Step
a. Domain : The set of all $(x,y)$ lie in the xy -plane.
b. Range: It refers to all Real numbers
c. Level Curves: The level curves are the hyperbolas along x- axis and y-axis refers to as asymptotes when $f(x,y) \ne 0$ as well as when $f(x,y)=0$
d. No Boundary points
e. Both open and Closed
f. Unbounded
