Hey there!
A geometric sequence is where we use multiplication or division to get to the next term.
In this case, we use multiplication (we multiply every term by 3)
So we have
-1, -3, -9, -27, -81, -243...
Steps:
Hope everything is clear.
Let me know if you have any questions; if oyu do, kindly comment below my answer.
#LearningDoesn'tEnd
[tex]\rule{200}{2}[/tex]