Final answer:
The equation y = -10x represents a linear function. However, it does not have a positive y-intercept.
Step-by-step explanation:
The equation y = -10x represents a linear function. When the coefficient of x is negative, the graph of the function will have a negative slope, meaning it will slope downward. However, the question asks specifically whether the function has a positive y-intercept. A positive y-intercept means that the graph of the function intersects the y-axis above the origin.
In the case of y = -10x, since there is no constant term (a), the y-intercept is at zero, which is on the origin. Therefore, the graph of this function does not have a positive y-intercept, and the answer is b) No.