### Home > PC > Chapter 9 > Lesson 9.3.5 > Problem 9-156

9-156.

Show that the equation of the tangent line to the curve .

Use the point - slope form for a linear function.

You are given a point. So now you need the slope of the tangent line.

1. Find the slope function at .

2. Graph the slope function.

3. As

*, what does the slope approach?*

Use the slider in the eTool below to see that the slope at is

Click the link at right for the full version of the eTool:

*9-156 HW eTool*