Question 499019
The first one results in the inside (and boundary) of a circle with center at (0,0) and radius = 5.
The 2nd one eliminates everything with negative y and everything below the lines y=x (to the right or NorthEast) and y=-x (to the left or NorthWest).
So the final graph will be the border and interior of a "piece of pie", a right angle at the point (0,0), "crust" at the top.
(>  rotated 90 degrees clockwise.