Answer:
   not a function; (2, -2) and (2, 2)
Step-by-step explanation:
A vertical line has the same x-value for all of its y-values. Only the last answer choice lists two points on a vertical line. They also happen to be points on the graph, so it is NOT a function.
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Any vertical line in the x-interval (-3, 3) will pass through the segments y=-2 and y=2. Vertical lines at x=-3 or x=3 will pass through an infinite number of points between y=-2 and y=2.
 
        
             
        
        
        
To find slope use the slope formula. Then, use y=mx+b. Plug in the numbers. 
        
             
        
        
        
Eight hundred seven million, five hundred thirty thousand, twelve
        
                    
             
        
        
        
Answer:
Option  A
Step-by-step explanation:
2001 can be divided by 3, 23, and 29 without remainders. This means that the three numbers are prime divisors of 2001. 
2001/3 = 667
2001/23 = 87
2001/29 = 69
The sum of the prime divisors is 55.
3 + 23 + 29 = 55
Option A should be the correct answer. 
Hope this helps.