00:01
Hello, so here we have a quadrilateral that has vertices of a, which is 02, b, which is 4 negative 1, c which is 1 negative 5, and d which is negative 3, negative 2.
00:11
So the slope of ad is going to be, well, change in y over a change in x.
00:18
From problem 68, we know that the slope of ad, again, change y over change in x here gives us 4 thirds.
00:28
And then the slope of dc, of dc, again, is changing y but change in x.
00:37
So in this case, it's going to be negative 5 minus a negative 2 divided by change in x was going to be a 1 minus negative 3.
00:47
So that's negative 5 plus 2 over 1 plus 3, which becomes a negative 5 plus 2 is a negative 3 over 1 plus 3.
00:56
Which is four...