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)