2nd differences are 2 , 3 , 4
3rd differences are a constant 1
it's cubic ...
how do you use finite differences to determine whether relation is quadratic or linear?
X, Y FIRST DIFFERENCE
(1,-33) -
(2,-31) 2
(3,-27) 4
(4,-20) 7
(5,-9) 11
Is this relation linear, quadratic OR neither and why?