Respuesta :

Kaikerscupcake
Hey there! :D

When you reflect a point across the y-axis, you change the y sign.

For example, if I was to have the point (1,2), I would change it to (1,-2) 

S(-7,-3) -> (-7,3)

It went from positive to negative. 

I hope this helps!
~kaikers

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