The point Q(9, -1) is reflected across the y axis. Use arrow notation to describe the original point and its reflection
a) Q(9, -1) -> Q'(9,1)
b) Q(9, -1) -> Q(-9, 1)
c) Q(9 -1) -> Q(-9, -1)
d) Q(9 -1) -> Q(9, -1)

Respuesta :

I am not sure but, i think it is C
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The answer would.be C)Q(9,-1)->(-9,-1) because you would start in the fourth quadrant and flip to the third (+,-)->(-,-) or (x,-y)->(-x,-y)