Final answer:
The translation rule T < -7, -8> (X) moves a point X 7 units to the left and 8 units down in a coordinate plane.
Step-by-step explanation:
The translation rule T < -7, -8> (X) describes how a point X in a coordinate plane is to be moved to create a new translated point. According to the rule, the negative signs indicate the direction of the translation. For X to follow this translation rule, it must move 7 units to the left (which is the negative x-direction) and 8 units down (which is the negative y-direction). This is because conventionally, rightward movement along the x-axis and upward movement along the y-axis are considered positive, while leftward and downward movements are considered negative, as illustrated in the reference information provided.