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May I please get help with this where I have tried multiple times but still cannot find the right answers for them

May I Please Get Help With This Where I Have Tried Multiple Times But Still Cannot Find The Right Answers For Them class=

Answer :

Given a point with coordinates (x, y), to rotate 90º counterclockwise, the rule is:

[tex](x,y)\Rightarrow(-y,x)[/tex]

In thisc ase, we have the point:

[tex](2,-1)[/tex]

Applying the rule:

[tex](2,-1)\Rightarrow(1,2)[/tex]

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