For this case we have by definition, that if two lines are parallel then their slopes are equal. That is to say:
[tex]m_ {1} = m_ {2}[/tex]
If we have a line of the form:
[tex]y_ {1} = - \frac {1} {2} x_ {1} + b_ {1}[/tex]
Then a parallel line will be given by:
[tex]y_ {2} = - \frac {1} {2} x_ {2} + b_ {2}[/tex]
That is, the slopes are the same!
Answer:
Option C
