ETHANSYGO ETHANSYGO Math Answered Function Not Function1.{(1,9),(2,8),(3,7),(4,6)} 2.{(2,3),(4,5),(-2,-1),(0,1)}3.{(1,5),(-1,4),(-1,3),(5,-2)} 4.{(2,2),(2,4),(2,6),(2,8)} 5.{(3,0),(0,3),(4,8),(8,4)}