### Home > PC3 > Chapter 7 > Lesson 7.2.5 > Problem 7-127

7-127.

EQUATIONS OF TANGENT LINES Homework Help ✎

Use your slopes from problem 7-126 to write the equation of the line that is tangent to each of the functions at the point when

*x*= 2. Use point-slope form.Describe how your procedure would have been different in the previous problem if you wanted to calculate the slopes of the tangent lines at

*x*= 5.

First you will need to determine the *y*-coordinate for each function when *x* = 2.

Use 5 and *f*(5) instead of 2 and *f*(2) .