Answer:  see below
<u>Step-by-step explanation:</u>
Write each equation in y = mx + b format where m is the slope and b is the y-intercept.
Left side: -4 ≤ x < -1
If you continue the line through the y-axis it will pass through (0, 4) --> b = 4
The rise over run is -1 over 1 --> m = -1
y = (-1)x + (4)   -->    y = -x + 4
Right side: -1 < x < 4
The line passes through (0,0) --> b = 0. 
The rise over run is -1 over 1 --> m = -1
y = (-1)x + (0)    -->    y = -x

 
        
             
        
        
        
X cannot be 6 or -2/5  because if they were the denominator would be zero
        
             
        
        
        
Answer:
:DDDDD
Step-by-step explanation:
 
        
                    
             
        
        
        
Answer:
   (-1, 6)
Step-by-step explanation:
A graphing calculator shows the vertex to be (x, y) = (-1, 6).
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You can also find it by putting the equation into vertex form.
   y = -2(x^2 +2x) +4
   y = -2(x^2 +2x +1) +4 +2(1) . . . . . add 1 inside parens; the opposite outside
   y = -2(x +1)^2 +6
Compare to ...
   y = a(x -h)^2 +k
and you see a=-2, h=-1, k=6
The vertex is (h, k) = (-1, 6).
 
        
             
        
        
        
Answer:
A pediatricians office tracks the age (in months) in which 25 babies begin to walk