Final answer:
The given function, represented by a parabola facing up with a vertex at (5, -4), is not one-to-one.
Step-by-step explanation:
For a function to be one-to-one, each input must correspond to a unique output. Since the given function is represented by a parabola facing up with a vertex at (5, -4), it is not one-to-one. This is because there are multiple inputs that can correspond to the same output.