Y=3x-2
Y=3(0)-2
Y=-2
Y=3x-2
(0)=3x-2
0 = 3x-2
Then divide 3 by three to have x by itself and do the same on the other side
Therefore since 0/3 is 0 you end up with
0 = x - 2
Then you add two to the negative two, and do so to the zero as well.
Therefore
2 = x, and you could flip it to x = 2
Your solution is
x = 2, y = -2
(2,-2) if you are looking for coordinates.