Answer:
1/2
Step-by-step explanation:
The line equation is:
[tex]y=mx+b[/tex]
where m is the slope and b is the y-intercept
Parallel lines are those that have the same slopes so according to the line that you wrote we have that
[tex]y=\frac{1}{2}x+3[/tex]
any parallel line has to have the same slope, in this case it has to be 1/2
