Parallelogram abcd has vertex coordinates a(-4,4) b(-1,4) c(-2,2) and d(-5,2). it is reflected across the y-axis. what is the coordinates of b

when reflecting:  

x axis: (x,y) becomes (x, -y)x never changes  

y axis: (x,y) becomes (-x,y)y never changes  

so...

point B: (-1,4) becomes (1,4)

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