### 2 Answers

- PopeLv 72 months ago
In two dimensions there is no rotation about any axis. I think I get that notation now though. You should consult your course materials to see what conventions are in use.

I believe it must be a composite transformation. First, there is a reflection on the y-axis. Following that, there is a 90° counterclockwise rotation with respect to the origin.

Reflection on the y-axis: (2, -3) → (-2, -3)

Rotation 90° counterclockwise: (-2, -3) → (3, -2)

A(2, -3) → A'(3, -2)

The notation used for these transformations seems to change every time a new textbook is published. Your book may have a different interpretation of the direction of rotation or the order of transformations. That is why you need to check with your own course literature.

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- Anonymous2 months ago
The vertical axis is the y-axis.

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