Question 54353
Find the coordinates of the vertices of each figure after the givin transformation is performed. 
Triangle RST with R(-2,4),S(2,0),T(.1,.1) reflected over the y axis
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If a point (a,b) is reflected in the y-axis it become (-a,b)
So your points become:
(2,4), (-2,0), (-0.1,0.1)
Cheers,
Stan H.