So let's do that. So in order to find the equation of the tangent line, the equation of a line is y is equal to mx plus b, where m is the slope and b is the y-intercept. There's other ways that you could think about it. You could think about it in terms of point slope, where you could say y minus some y that sits on that line is equal to the slope times x minus the corresponding x one. So x one comma y one sits on that line someplace. Actually, I like to write this point slope form like this sometimes. Y minus y one over x minus x one is equal to b.