Final answer:
The range of a(x) is y > 9.
Step-by-step explanation:
The given function f(x) = is translated using the rule (x, y) → (x – 6, y + 9) to create a(x). To determine the range of a(x), we need to find the possible values of y for the translated function. Since the translation is adding 9 to the y-coordinate, the range of a(x) will be greater than the range of f(x) by 9 units. Therefore, the correct expression that describes the range of a(x) is y > 9.