### Home > GC > Chapter 9 > Lesson 9.1.2 > Problem 9-23

9-23.

What is

(the length of)?Use the Pythagorean Theorem to find the length of

.Reflect

across the -axis to form. What are the coordinates of ? Describe the function that would change the coordinates ofto . Rotate

clockwise ( ) about the origin to form . What are the coordinates of ?Translate

so that . What are the new coordinates of point ?

Use the eTool below to solve each part of the problem.

Click the link at right for the full version of the eTool: *GC 9-23 HW eTool* (Desmos)