Which one of these equations represents a quadratic function?

Responses

y=3x
y is equal to 3 x

y=3x2+2
y is equal to 3 x squared plus 2

y=3x+2
y is equal to 3 x plus 2

y=3x3+2

None of these equations represents a quadratic function. A quadratic function is in the form of y=ax^2+bx+c, where a, b, and c are constants.

The equation that represents a quadratic function is:

y = 3x^2 + 2

The equation that represents a quadratic function is:

y = 3x^2 + 2

To identify a quadratic function, you need to look for the presence of the x variable raised to the power of 2 (x^2). In this equation, we have the x variable squared, which is a quadratic term.