Question 691169
Any point is given as (x,y). Thus (3a-1, 2-2a) means x=3a-1 and y=2-2a

{{{2(3a-1) + 3(2-2a) = 9}}}

Distribute:

{{{6a-2 + 6 -6a = 9}}}

Combine like terms (6a and -6a cancel):

{{{ 4=9}}}

This is incorrect, which means the point given is not on the line.