a(1) = 3(1)-1 = 3-1 = 2
a(2) = 3(2)-1 = 6-1 = 5
a(3) = 3(3)-1 = 9-1 = 8
So, the sequence would be 2,5,8,11....
Answer:
The coordinates of point B are : (-1, 1)
Step-by-step explanation:
You multiply -4 by 2 which gives you -8 then you multiply 1 by 2 which gives 2.
Then you create the equations 
you substitute -7 for +7 and add 7 to -8 which gives -1 (
) and subtract 1 from 2 which gives you 1 (
)
To check your answer use the midpoint formula 
which gives you your midpoint (-4,1)
