Answer:
0
Step-by-step explanation:
Slope is calculated y2-y1/x2-x1
18-18/0-3
0/-3
0
 
        
             
        
        
        
Answer:
y = (x - 2)(x + 4)(x - 1)
Step-by-step explanation:
Given the zeros of a function say x = a and x = b, then
The factors are (x - a) and (x - b) and 
y = (x - a)(x - b)
Given the zeros are x = 2, x = - 4, x = 1, then
the factors are (x - 2), (x - (- 4)) and (x - 1), that is 
(x - 2), (x + 4), (x - 1) , thus
y = (x - 2)(x + 4)(x - 1)
 
        
                    
             
        
        
        
Answer: 16, 18
Step-by-step explanation:
16 + 18 = 34
 
        
             
        
        
        
It is 7
2 below the zero, 12 above = 14 steps 
middle point is 7