CPM Homework Help : CCG Problem 9-52

Multiple Choice: The point $A\left(-2,5\right)$ is rotated $90°$ counter-clockwise ( $↺$ ) about the origin. What are the new coordinates of point $A$ ?

$\left(2,5\right)$

$\left(5,-2\right)$

$\left(2,-5\right)$

$\left(-5,-2\right)$

Hint:

When you rotate counterclockwise $\left(x,y\right)→\left(-y,x\right)$ .

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