Question

http://prntscr.com/dj0kax

Answer 1

@Will.H

Answer 2

nonlinear means not on the same level Notice that both of the top set of data tables both changes according to a constant rate Thus it is between Set C and Set D

Notice that Set C is decreasing therefor.. decay = negative thus it would be Set C

Answer 3

ok next!
http://prntscr.com/dj0myc

Answer 4

different thread mate.. after this i'll only answer 1 question per thread

Answer 5

ok :)

Answer 6

clearly it is not linear because the plot leaning from above to the left
therefor we only need now to determine whather it would be negative or positive
Since it is going up...increasing then the data would be positive
therefor
Nonlinear positive