So we could say times one here if we like, or we could just not write that because it doesn't change the value. And so let's evaluate that when x is equal to negative one. So f prime of negative one is equal to, I could just write this as negative, all right, like this way, negative one over negative one minus one squared. And so this is going to be negative two down here. So this is equal to negative negative 1 4th. So the slope of our tangent line is, so I could write it this way, m is equal to negative one negative 1 4th. Negative 1 4th, and so now we just have to write its equation down.