Determine whether the formula describes y as a function of x. Explain your reasoning. y = -3x^2 - 7x - 6

Answer 1

Yes, the formula describes y as a function of x since each x value has exactly one corresponding y value. "A relation from a set X to a set Y is called a function if each element of X is related to exactly one element in Y" (University of Regina Math Central).

Answer 2

Yes, y, or f(x), if a function of x. As the independent variable, x, increases or decreases, the dependent varibale, y, changes. Therefore, y is a function of x.