00:01
So this problem provides us with a graph, and that graph starts at 0 -0, and then it increases and goes towards the right, and this value is at about 3.
00:14
So a couple of things to notice.
00:16
We're asked to determine the possible x values and y values of this function, which we call the domain and the range.
00:22
So the domain is asking us to look at all of the possible x values in this function.
00:26
So if we look left to right, we want to know what the furthest left point is for the domain and the furthest right point for the domain.
00:32
So the furthest left point is this endpoint here, which is at zero -zero.
00:37
So zero is the smallest x value that's in my graph because looking to the left for my x -axis, i don't have any points that are over there that are smaller than zero.
00:47
If i look towards the right, i do have a variety of points and my x values continue further and further to the right.
00:53
And then we have this arrow that indicates that it's going to keep continuing forever and approach infinity.
00:59
It's never going to stop.
01:00
So the domain is actually from zero.
01:02
We used a bracket notation because we're including zero to infinity because we stop at zero.
01:10
That's our furthest left point, but to the right, we're never going to stop.
01:13
We keep having an arrow that's going to continue, continue, continue.
01:16
If we want to write this using a different notation, we could say all the x values such that x is between zero, so bigger than zero and less than infinity.
01:25
So between zero and infinity...