Answer:
Step-by-step explanation:
Parallel lines have the same slope.
The slope-intercept form of an equation of a line:
[tex]y=mx+b[/tex]
m - slope
b - y-intercept
We have the equation of the line m:
[tex]m:\ y=3x+3\to m=3[/tex]
Therefore the equation of a line n parallel to the line m is:
[tex]y=3x+b[/tex]
where b is any real number