Which quadratic function has the leading coefficient of 2 and a constant term of -3

y = 2x^2 + kx - 3

Step-by-step explanation:

Unfortunately, you haven't listed the answer choices.  A quadratic function with leading coefficient 2 and a constant term of -3 has the form

y = 2x^2 + kx - 3, where k could take on any value.

yes because there is exactly one y value for every x value

for function there can't be more than one value for every x value