Which data set represents an increasing, linear function? a(1,-2),(3,1),(5,4),(7,7) b(1,1),(2,0),(3,-1),(4,-2) c(1,-3),(3,5),(5,11),(7,18) d(1,17),(2,15),(3,11),(4,3).

Which data set represents an increasing, linear function? a(1,-2),(3,1),(5,4),(7,7) b(1,1),(2,0),(3,-1),(4,-2) c(1,-3),(3,5),(5,11),(7,18) d(1,17),(2,15),(3,11),(4,3)