The answer is -54 When you look at the first equation and the second one you can see that the variables arent in the same order. So you first have to change that. -48a-42b-6c is now written the same way Now you aha e to look for the rate of change -48/8 =-6 -47/7=-6 -6/1=-6 All of them show that the rate of change was -6 so you just have to multiply the 9 by -6 to get your answer which is -54
