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ALGEBRA HELP PLZZZZZZZZZ

Apply this transformation to a square with vertices A(3,-4) B(7,-4) C(3,-8) D(7,-8)

apply this (x,y) ----> (-x,y)


I need to rotate this 180 degrees from the origin How do I do this?  DO I use the corrdinates from the prior answer and move it 180 degrees to a new quadrant? 

PLEASE HELP ME AND SHOW HOW TO DO THIS!! THANK YOU!!!!



Answer :

konrad509
1st transformation:
[tex]A'=(-3,-4)\\ B'=(-7,-4)\\ C'=(-3,-8)\\ D'=(-7,-8)[/tex]

2nd transformation:
When you rotate a point around the origin by 180 degrees, you change both coordinates to opposite values.
[tex]A''=(3,4)\\ B''=(7,4)\\ C''=(3,8)\\ D''=(7,8)[/tex]

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