00:01
In this problem, we're going to take two points, and we're going to write the equation of the line that goes through these two points in slope -intercept form.
00:10
To do this, we're going to start with point slope form, which is y -minus y -1 equals m times x -minus x -1.
00:19
Well, we have a point.
00:21
We'll use this point right here, this first one, so we can put that into the x -1 and y -1.
00:27
We don't have a slope, so we need to go ahead and find the slope.
00:29
This is to take negative 13, the second y, and subtract the first y, 8 .3.
00:36
And over the second x, 5 .1, subtract the first x, negative 2 .3.
00:43
So let's go ahead and do that.
00:45
Let's get negative 13 .9 minus 8 .3 on top will be negative 22 .2.
00:54
And then 5 .1 minus a negative 2 .3.
00:58
On the bottom would be 7 .4...