# A line segment with endpoints at #(1 , -4 )# and #(2, 7 )# is rotated clockwise by #(3 pi)/2#. What are the new endpoints of the line segment?

##### 1 Answer

Jul 10, 2017

#### Explanation:

#"assuming rotation about the origin"#

#"under a clockwise rotation about the origin of " (3pi)/2#

#• " a point " (x,y)to(-y,x)#

#rArr(1,-4)to(4,1)#

#rArr(2,7)to(-7,2)#