Step-by-step explanation:
since you understood 1a, I honestly do not understand what's the problem with 1b.
this works exactly the same way. only this time it is x+0 and y changes. that is all.
(x, y) -> (x+0, y-5)
A" = (-6. 2)
B" = (-4, -3)
C" = (-8, -3)
