Answer: Linear, Nonlinear, Linear, Nonlinear
Explanation:
First 1: as x increased y also increased which means the thing is a line hint linear
Second 1: According to the points (u can graph them out if u want to) it goes down then up which isn't a straight line hence quadratic or nonlinear
Third 1: first degree hint linear
Fourth 1: Absolute value thing looks like a V when u plot it so its not linear