Six different airlines fly from new york to denver and seven fly from denver to san francisco. how many dif- ferent pairs of airlines can you choose on which to book a trip from new york to san francisco via denver, when you pick an airline for the flight to denver and an airline for the continuation flight to san francisco?

Which statement best explains whether the table represents a linear or nonlinear function? input (x) output (y) 2 5 4 10 6 15 8 20 it is a linear function because the input values are increasing. it is a nonlinear function because the output values are increasing. it is a linear function because there is a constant rate of change in both the input and output. it is a nonlinear function because there is a constant rate of change in both the input and output.