If it is a straight line, I would think only once. Unless it curves, etc. (hopefully that helps)
Answer:
Option B. Linear

Step-by-step explanation:
Let
x----> the time in hours
y----> the total inches of snow on the ground
we know that
The function that best model this situation is the linear function
so

In this problem

----> the y-intercept
substitute

Answer:
Option C is the correct answer
Step-by-step explanation:

It shows a positive correlation
Just go from the very left of the graph to the very right and see, if the points go up or down.
Or pick off some points to see the trend
(2,1) (3,2) and (5,4)
These points show that over time the number of typos go up with the number of pages printed.
36-9
-9+36
1 (36-9)
36-(3×3)