Answer:
-1 ..?
Step-by-step explanation: because the lowest number a curve touches is -1
 
        
             
        
        
        
Answer:
your didn't give any proper point ,but i assuming the the question as
the line pass through the point (1,0,-2)
so answer is 
(x-1)/a = y/b = (z+2)/c,
where a,b,c are constant
Step-by-step explanation:
 
        
             
        
        
        
Depends where. Normally it whould cost 17,500.