you have to show the graph
Answer:
B. 40
Step-by-step explanation:
p is the opposite of 140.
180 - 140 = 40
Answer: 
Step-by-step explanation:
The slope of a line equals to the difference between points' y-coordinates divided by the difference between their x-coordinates.
That is, if
and
are the point of a line,
Then the slope of the line is,

By the given diagram,
,
,
and 
Thus, the slope of the given line
= 
⇒ Fourth option is correct.