Answer:
The Function rule for line is: 
Option A is correct option.
Step-by-step explanation:
Find a function rule for the line that passes through the origin (0,0) and the point (5, - 13)
The function rule is of form: 
where m is slope and b is y-intercept
Finding slope:
The formula used to find slope is: 
We have 
Putting values and finding slope

Finding y-intercept
We will use point(0,0) to find y-intercept

So, y-intercept is 0
The Function rule for line having slope m=-13/5 and y-intercept b=0:

So, The Function rule for line is: 
Option A is correct option.