-t + 9t - 12t - (-16t) - 18t = -6
-t + 9t - 12t + 16t - 18t = -6
-6t = -6
-6t/-6 = -6/-6 (-6 on the left side cancels out so we are only left with T and our answer)
T = 1
With process of elmination the answer is C because all the rest are the same number but placed it is different order.
~JZ
2,-17
Equation: y = -0.11765x + 3.23529.