Answer:
The last one.
Step-by-step explanation:
The solutions with the horizontal lines are wrong because then h(x) would be -1 and 1 respectively.
The subtlety is in the open or closed dot. x ≥ -1 means that -1 is included, which is drawn as a closed dot. x < -1 means that -1 is excluded, which is drawn as an open dot.
Hence the last graph is the correct one.
 
        
                    
             
        
        
        
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Answer:
Not enough information given
Step-by-step explanation:
To find the slope, you need two points. You put the values into this formula:
(y_2 - y_1) / (x_2 - x_1) = m
The underscores show which ordered pair, so _2 means the values from the second one.
m stands for slope.
 
        
                    
             
        
        
        
Answer:
1
Step-by-step explanation:
9-8=1