Answer:
Reflection across the y-axis and translation 2 units down
Explanation:
Quadrilateral ABCD has vertices at points A(-1,3), B(1,0), C(2,3) and D(1,4).
1. Reflect quadrilateral ABCD across the y-axis. This reflection has the rule:

Hence,
2. Translate quadrilateral A'B'C'D' 2 units down. This translation has the rule:

Hence,