Wouldnt it be the out side numbers ?at both ends?
        
             
        
        
        
Answer: A
Step-by-step explanation:
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If you use a textbook for this i would recommend slader, it really works!!
        
             
        
        
        
Answer: D. (-b,0) 
applying coordinate geometry practice 
the whole quiz >
1. b. 
2. a.
3. c.
4. d.
5. c.
6. c.
7. a.
8. d.
9. d.
10. b.