I did use that. I did use that. And I did use that. So this was a little bit of a fun little puzzle where I just wrote down all the information they gave us and I tried to figure out, based on that, whether I could figure out m and b. And this is pretty neat. This is a solution, 2x minus 2. If we go to our slope field above, it wouldn't have jumped out at me, but if you think about, so 2x minus 2, its y-intercept would be negative 2 like that.