Final answer:
The sequence of transformations that will map Δabc to Δxyz is translating vertex b to vertex z and reflecting Δabc across side ab.
Step-by-step explanation:
The sequence of transformations that will map Δabc to Δxyz is:
Translate vertex b to vertex z
Reflect Δabc across side ab
So, Option 1) Translate vertex b to vertex z and reflect Δabc across side ab will achieve this.