Question

What is the image of A(3,4) under R90°?A. (3,−4)B. (−3,−4)C. (−4,−3)D. (−4,3)

Answer 1

To find the image of A(3,4) under the rotation of 90 degree.

We know that, the rotation R90 rule,

The image of a point (x,y) under R90 is (-y,x).

Therefore,

The image of a point (3,4) under R90 is (-4,3).

Hence, the correct option is option D.