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Marissa wants to write an abbreviated set of directions for finding coordinates of a figure reflected across the y-axis. Which mapping notation is correct? A. (x,y) --> (-x,y) B. (x,y) --> (x,-y) C. (x,y) --> (-x,-y) D. (x,y) --> (y,x)

Respuesta :

It is the first one, (x,y) to (-x,y) because it is going across the y axis from the positive side, so y stays the same but x becomes negative
It is a just make x negative 

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