00:01
To write the equation that passes through the point 7, negative 4, and negative 1, negative 2, first we're going to find, and we're writing that in slope intercept form.
00:13
So we want that in the form y equals mx plus b.
00:16
But first we need to calculate the slope of the line.
00:21
So i just marked our points as point 1 and point 2.
00:24
We're going to use the slope formula.
00:27
And so that means i'll have to find the difference in the y's.
00:30
Negative 2 minus negative 4 and the difference in the x, negative 1 minus 7.
00:39
Negative 2 minus negative 4 is going to become positive 2.
00:44
Negative 1 minus 7 is negative 8, so we can simplify our slope to negative 1 4th.
00:51
So we know that's the slope of our line...