In a cubic function, what does the value of d represent graphically?

Question:

Cubic Functions:

A cubic function is any polynomial function with at least one variable risen to a power of 3, and no other variables with any powers greater than 3. The general form of cubic functions is given as {eq}f(x) = ax^3 + bx^2 + cx + d {/eq}. In this formula x is the variable, and a, b, c, and d are constants.

Answer and Explanation: