Graph the function and identify the domain and range.

This is a quadratic function in the form of y = ax^2 where a = -6.

The graph of this function is a downward opening parabola.

Domain: Since this is a quadratic function, the domain is all real numbers (-∞, ∞).

Range: The range of a downward opening parabola is (-∞, 0].

Graph: (image not available)