SOLUTION: a triangle with vertices A(-3,4), B(3,1),and C(-1,-5) is rotated 90 degrees counterclockwise about the origin.find the coordinates of A,B,and C. A) A(-3,-4), B(3,-1), C(-1,5)

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Question 208503: a triangle with vertices A(-3,4), B(3,1),and C(-1,-5) is rotated 90 degrees counterclockwise about the origin.find the coordinates of A,B,and C.
A) A(-3,-4), B(3,-1), C(-1,5)
B) A(3,-4), B(-3,-1), C(1,5)
C) A(4,3), B(1,-3), C(-5,1)
D) A(-4,-3), B(-1,3), C(5,-1)
Answer by Edwin McCravy(20055)   (Show Source): You can put this solution on YOUR website!

The point (u,v) rotated 90° counter-clockwise
about the origin becomes the point (-v,u)

  

The correct answer is choice D)

Edwin
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