Answer:
y = - 5
Explanation:
In two dimensions, this is a line parallel to the x - axis. You can also think of it as a locus, the infinite set of points fulfilling (,− 5) — any real value of x, but y has to be -5.
Extending it to three dimensions, it is a plane parallel to the x-axis and also to the z-axis, or the locus (,− 5, ).