Final answer:
The function y = 2x² - 3 is a Quadratic function due to the presence of a squared term and the lack of higher-degree terms.
Step-by-step explanation:
The type of function represented by y = 2x² - 3 is a Quadratic function. This is because the equation is in the standard form of a quadratic function, which includes a squared term (x²), a linear term (ax), and a constant term (b). Since the equation given has a squared term with a nonzero coefficient and no higher-degree terms, it is a second-order polynomial, which is another way to refer to a quadratic function.