00:01
So in problem types like number one, we want to find the slope.
00:05
So we can see that point a is located at 1, 1 and point b is at 1, 2, 3, 4 for the x -coordinate and then 1, 2, 3, 4, 5 for the y -coordinate.
00:26
So to find slope, we're going to just take the change in y values over the change in x.
00:34
5 minus 1 over 4 minus 1 gives me a slope of 4 over 3.
00:43
Now for a problem like number 6, you have a horizontal line and that's through, let's say, negative 1, 2, 1, 2, 3, negative 2, negative 3 for a and then b is at 3, negative 3.
01:12
So if you want the slope of a horizontal line, you can use your slope formula negative 3 minus negative 3 over 3 minus negative 2...