Answer:
y = -1/2x-8
Explanation:
If the lines are parallel, they have the same slope.
y = -1/2x +3 is in the form y=mx+b where m is the slope and b is the y intercept
-1/2 is the slope so the new line will have a slope of -1/2
(0,-8) is the y intercept since x=0
We can write the equation since we know the slope (-1/2) and the y intercept (-8)
y = -1/2x-8