Assuming that the line you ask is y = 3x + 2.
If the lines are parallel then both have the same slope m = 3.
To pass through the point (3,8) we write the general equation of the line
y-yo = m (x-xo).
where,
(xo, yo) = (3,8)
m = 3
So
y = 3 (x-3) +8
Rewriting
y = 3x -1
