Answer:
function
Step-by-step explanation:
it is a function
You just have to do y2-y1/x2-x1 and if you do everything for the first time you get 6/12 which is 2 and for the second one you get 6/12 which is 2 so it is a function
700
The 9 = 9
The 0 = 0
The 7 = 700
The 5 = 5000
C.
The answer C is not rational