### Home > CC1 > Chapter 4 > Lesson 4.2.4 > Problem 4-83

In parts (a) through (c) below, refer to the previous problem. You will find the length of the line segments in problem 4-82 by substituting given values for the variables. For example, if * *is

Find the length of the line segment in part (a) of problem 4-82 using

. Substitute

for in the expression you wrote for part (a) of problem 4-82. Find the length of the line segment in part (b) of problem 4-82 using

.After substituting

for , the expression for the length of the line segment is. Find the length of the line segment in part (c) of problem 4-82 using

.

Your new expression will look like

. Find the value of this expression to determine the length of the line segment.