00:01
We have a line going through the points 8, 5, and 9, 6, and we want to write the equation for that line first in slope intercept form and then in standard form.
00:11
We can't start with slope intercept form, though, because we don't know the y intercept.
00:16
All we can do for our first step is find slope.
00:21
So change of y, so that's 6 minus 5 over change of x, 9 minus 8, 6 minus 8, 6 minus 5 is 6 minus 5.
00:31
1, 9 minus 8 is 1, source slope is 1.
00:35
And then pick one of the points and call that your x1, y 1.
00:40
And we're going to do point slope formula now.
00:45
So we're going to write y minus 5 equals m times parentheses x minus x 1...