Answer:
B
Step-by-step explanation:
A proportional relationship is represented by linear function with its linear parameter "b" equal to zero. Since b is equal to zero, the line passes through the origin and the function/relation is proportional.
To verify that we divide the y coordinate over the x coordinate we obtain a constant called k, which is the slope.
For instance:

According to this function we can easily check a proportional relationship among its points:


X - distance between Jie and Xiaoqing.

is true if either of

or

is true. We know

is true, which enough to say that

is also true.
if she doesnt have the money ot begin with then the number is going to be negative which means less than ZERO.