Which glide reflection describes the mapping ΔABC ->ΔDEF?

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A.(x, y) (x – 1, y + 3) and reflected across y = -3

B.(x, y) (x – 4, y – 1) and reflected across y = 0

C.(x, y) (x – 1, y + 3) and reflected across x = -3

D.(x, y) (x – 4, y – 1) and reflected across x = 0

You have to move triangle ABC left 4 units (x-4) and down one (y-1). Then it is reflected across the x-axis (y=0); That is choice B

Hope that helps!

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