Answer:
I believe your rule would be (The rule is add 3)
Step-by-step explanation:
If you have -9 and you get to -6 that means you added an interval of 3
-9,-6,-3,0,3 is how it would continue
(The rule is add 3)
x=-2
5x -10x- 30= 10x
-5x -30 = 10x
-30=15x
5 or 5/1
did the math, this is the result. Not sure if it's right, correct me if I'm wrong