# Point A is at #(2 ,-1 )# and point B is at #(3 ,-4 )#. Point A is rotated #pi # clockwise about the origin. What are the new coordinates of point A and by how much has the distance between points A and B changed?

##### 1 Answer

#### Explanation:

**Given** : Two Points

**Required**: New coordinates of

**Solution strategy** :

a) Rotate A

b) Use distance formula to find

c) Calculate

that is

You can also get this geometrically or by inspection...