You need to use the distance formula which is √(x2-x1)^2+(Y2-y1)^2
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After reflecting the points of triangle GHI over the y axis, the new points will be:
G' (3,0)
H' (5,-5)
I' (-1,-5)
Answer:
all work is shown and pictured
X = 39ft
It’s the same units as house A it’s just a reflection