Answer:
y = -2x² - x is quadratic function.
Explanation:
Given : Function .
To find : Which function is a quadratic function.
Solution : We have given that functions .
Quadratic function: A quadratic function is one of the form f(x) = ax² + bx + c, where a, b, and c are numbers.
We can see from given options
y = -2x² - x in form of f(x) = ax² + bx + c,
Where, a = -2 , b = -1 c = 0
Therefore, y = -2x² - x is quadratic function.