Answer:
the answer to your question of finding x is,
x = 6
The answer will be b I think that the answer but I am not sure
Answer:
The slope of the dashed line is 
Step-by-step explanation:
Perpendicular lines and slopes:
If two lines are perpendicular, the multiplication of their slopes is -1.
What is the slope of the dashed line
Perpendicular to a line with slope 4, so:


The slope of the dashed line is 