9. I think Austin has more rainfall. 10. Both cities have unguessable rainfalls. 11. I predict the rainfall will continue going high, then low, then high, then low.
Y = -2 x - 9 3 x - 4(-2 x - 9 ) = -8 3 x + 8 x + 36 = - 8 11 x = - 44, x = - 4 y = 8 - 9 , y = -1 This is a unique solution, the system is independent.
