Answer:
Neither
Step-by-step explanation:
-2x+2y=20
First, you need to transfer the [-2x+2y=20] equation to slope intercept form. First, get the y variable on one side by subtracting -2x from the left side.
So then you have
2y= 2x+20
Then you divide the 2 from the y on BOTH side
y= x+10
Now compare the slope of both equations
y= -1/2x+10 (slope= -1/2)
y=x+10 (slope= 1)
Since the parallel slope to -1/2 is the same slope
Since the perpendicular slope to -1/2 is equal to 2/1 or 2,
Neither of them work
