Explanation
If two lines are parallel then that means that they have the same slope. The equation of a line in slope-intercept form is the following:
[tex]y=mx+b[/tex]
The line given by the question is:
[tex]y=\frac{1}{2}x+3[/tex]
As you can see by comparing both expressions the slope of this line is 1/2. Therefore if a line is parallel to this one its slope must be 1/2.
Answer
Then the answer is 1/2.
