So that's that there, clearly a nonlinear function. But we can zoom in on a point and if we zoom sufficiently in, we will see that it looks roughly linear. So let's say we want to zoom in on the point one comma one. So let's do that. So zooming in on the point one comma one, already it is looking roughly linear at that point. And this property of local linearity is very helpful when trying to approximate a function around a point. So for example, we could figure out, we could take the derivative at the point one one, use that as the slope of our tangent line, find the equation of the tangent line, and use that equation to approximate values of our function around x equals one.