Answer:
The correc/valid answer is D. f(x) = 0.4x^2-1
Step-by-step explanation:
Now, again based on the graph it seems like f(x) is received/got by shifting g(x), 1 unit (straight up-and-down) downward.
And, also it is (pressed or forced into a smaller space) by some unit less than 1.
So it is the type of where a is must be a positive number less than 1. ( because here up-and-down (press or force into a smaller space)ion happens)
Since, from the given options , only Option D is showing the above conditions.
<u><em>Mark as brainliest please, I need a few more :D</em></u>