A because that is where they cross
        
                    
             
        
        
        
Answer:
y = 3(x+1)^2 - 4
Step-by-step explanation:The general form of the equation of a quadratic function whose vertex is (h,k) and whose leading coefficient is a is:
y - k = a(x-h)^2, or
y      = a(x-h)^2 - k
Substituting the coefficients of the vertex (-1, -4), we get:
y      = a(x + 1)^2 - 4
Substituting the coordinates of the given point, (1,8), we get:
8      = a(1+1)^2 - 4, which simplifies to:
8      = a(2)^2 - 4, or 
8  = 4a - 4.  Then 4a = 12, and a = 3.
Thus, the desired equation is y = 3(x+1)^2 - 4 (answer j).
 
        
             
        
        
        
Answer:56
Step-by-step explanation:do 180-68, then divide by 2(because the x angles are equal to each other.
 
        
             
        
        
        
Answer:
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lk;j
Step-by-step explanation:
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