Answer:
B
Step-by-step explanation:
The information on the graph is almost symmetrical, because the lines look almost the same length on both sides.
 
        
                    
             
        
        
        
A) No one in the class studied more then 5 hours 
 
        
             
        
        
        
Answer:
   A.  -2
   B.  -10
Step-by-step explanation:
The slope of a perpendicular line will be the negative reciprocal of the slope of the given line:
   -1/(1/2) = -2 . . . . slope of the perpendicular line
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The y-intercept will let the given point satisfy the equation ... 
   y = -2x +b
   2 = -2(-6) +b
   -10 = b . . . . . . . subtract 12. This is the y-intercept.
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The graph shows the two lines and the points they go through.
 
        
             
        
        
        
Answer:
D) graph D
Step-by-step explanation:
x² < 4
x <  which means x < 2 and x > -2
 which means x < 2 and x > -2