Final answer:
The given function F(x) = a * b represents a horizontal line with a y-intercept at (0, a * b), where a and b are constants. Since the function is not in the form of a linear equation with an x variable, the y-intercept is simply the constant value of the function when x = 0.
Step-by-step explanation:
The question asks about the y-intercept of a function F(x) = a * b, which does not have a variable x term. Therefore, the graph of this function is a horizontal line at the y-value of a * b.
Since there is no x-dependence, the line does not cross the y-axis at any point other than at (0, a * b), provided that a and b are constants. The y-intercept of a linear equation in the form y = mx + b is the y-value where the line crosses the y-axis, usually represented by point (0, b). However, in this case, since the function given is not linear and does not have x as a variable, the answer would be the constant term or the value of the function at x = 0, which is a * b. Without additional context or values for a and b, we cannot determine the exact coordinates of the y-intercept.