1 00:00:01,841 --> 00:00:07,841 What is the slope of the line that contains the points (7/2, -19/4) and (-2/3, 57/8) ? 2 00:00:07,841 --> 00:00:13,926 So I will do this problem because those people who wrote this problem want us to do it this way, 3 00:00:13,926 --> 00:00:16,008 by using the formula. 4 00:00:16,008 --> 00:00:18,142 But you know I'm not a fan of blindly using formulas. 5 00:00:18,142 --> 00:00:22,408 So maybe after we do this, we will work it out, or we will visualise it a little bit 6 00:00:22,408 --> 00:00:26,841 to show us the formula really is just measuring the inclination of the line. 7 00:00:26,841 --> 00:00:29,091 So if I have two points, 8 00:00:29,091 --> 00:00:32,075 So let's say one point is (x1,y1) 9 00:00:32,075 --> 00:00:41,875 The other point is (X2,Y2). The slope of a line; and they use the letter "m" for the slope of the line. 10 00:00:41,875 --> 00:00:45,559 Is going to be the difference between the "y"s, and you want to make sure 11 00:00:45,559 --> 00:00:47,625 you get the order right. So if we start with "Y2"