Answer:
1/2
Explanation:
2x+y =4
Lets solve for y so the equation is in slope intercept form
Subtract 2x from each side
2x-2x+y = -2x+4
y = -2x+4
The slope is-2
When we want a perpendicular line, the slope is the negative reciprocal
-(1/-2)
+ 1/2
The slope of the new line is 1/2