00:01
All right here, we have these two sets, x and y.
00:03
And i'm going to use red and blue to show these two sets.
00:06
That way, when we graph them on the number line, we will see very clearly how and where they overlap.
00:11
So if x starts at negative 4 and including negative 4 and goes all the way to positive 3, but doesn't include 3.
00:19
And then we have for blue that y is everything from negative infinity up to negative 1 and including negative 1.
00:27
Then we can look at our number line.
00:30
I'm going to draw just a number line right here.
00:32
And i'm going to say, okay, maybe i'm going to put a zero right here in the middle and then one, two, three, four, five out here to the right.
00:39
That ought to be enough.
00:40
And then one, two, three, four, five, negative five out here to the left.
00:45
And now let's graph our red.
00:48
So everything from negative four to three...