Question

2.-6,18,-54,... next three numbers, and rule

Answer 1

*-3

Answer 2

y=-3x

Answer 3

so 162, -486, 1453... i did that in my head so maybe a little off

Answer 4

its written as:
\[a _{n}=2 \times (-3)^{n}\]

Answer 5

err... no

Answer 6

\[a _{n}=2 \times (-3)^{n-1}\]

Answer 7

@ arman1002 is correct. From Mathematica:\[\text{Table}\left[2(-3)^{n-1},\{n,8\}\right]=\{2,-6,18,-54,162,-486,1458,-4374\} \]