00:01
In this question, we want to describe in words the region of three -dimensional space that's represented by the inequality.
00:07
Z is greater than or equal to zero, and z is less than or equal to six.
00:13
So if i'm in three -dimensional space, here's our x, our y, and our z.
00:21
Now z equals zero is the set of points that are in the xy plane.
00:27
So z equals zero is the xy plane.
00:32
Because z measures how far up or down you go, if z is zero, you haven't gone up or down at all, you are in the xy plane.
00:43
So z equals zero is down here.
00:47
It is the xy plane...