Respuesta :
Answer:
4
Step-by-step explanation:
The slope of the green line is the negative reciprocal of that of the red line:
-1 / (-1/4), or just 4
Answer:
+4
Step-by-step explanation:
The slopes of perpendicular lines are negative reciprocals of one another.
Here, with one slope being -1/4, the slope of a perpendicular line would be +4.