00:01
So in a previous problem, you had that n equals x squared minus x all over two.
00:09
And you had to set it equal to 21, just double checking out of the right number.
00:16
And then you do a bunch of work, and you figure out that x equals seven.
00:21
So that means that there are seven players.
00:23
Well, how do you read the graph that they give you? so it's a very large graph, and it starts here.
00:29
I'll just put a few order pairs.
00:31
It's one zero because if there's one player, there's zero games.
00:35
But then the next point, i'll write it underneath, it's 2 -1, because if there's two players, there's two games...