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What are the new coordinates of these pre-image points after a 270° CCW rotation? A (-3,2), B (4-7), C (-9,-8) A' (-3. 2). B' (4. -7), C (-9.-8)

Respuesta :

We have the following:

270° CCW rotation = 90° CW

[tex]90CW(x,y)\rightarrow(y,-x)[/tex]

therefore:

[tex]\begin{gathered} A(-3,2)\rightarrow A^{\prime}(2,3) \\ B(4,-7)\rightarrow B^{\prime}(-7,-4) \\ C(-9,-8)\rightarrow C^{\prime}^{}(-8,9) \end{gathered}[/tex]

Therefore, the answer is the last option D.

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