Rotate △ABC 90 degrees (counterclockwise) about the origin to create AA' B'C'. What are the coordinates of the following points? (3 points)

Question

-10

A'

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Answer 1

To rotate a point $(x,y)$ 90 degrees counterclockwise about the origin, you can use the following transformation:

$$(x,y)\to (-y,x)$$

If you have the coordinates of point $A$ as $(x_A,y_A)$, then the coordinates of point $A^{\prime }$ after rotation will be:

$$A^{\prime }=(-y_A,x_A)$$

If you provide the coordinates of the original point $A$ (and potentially points $B$ and $C$ if needed), I can help you find the coordinates of $A^{\prime }$. Please provide the coordinates for point $A$.