When we want to find the roots of a one-variable function, we look for where its graph intersects the x-axis. In this case, the graph intersects the x-axis at 
The vertex of a parabola is the highest or lowest point on it, depending on whether the leading coefficient of the quadratic function is negative or positive. In this case, we see that the lowest point is 
For the y-intercept, just look for where the graph intersects the y-axis; in this case, that point is 
Using this information, the vertex-form equation of the parabola is  so the factors are two copies of
 so the factors are two copies of  In this case, the value of
 In this case, the value of  in the equation
 in the equation  was conveniently 1; if that's not the case, you'll want to plug in
 was conveniently 1; if that's not the case, you'll want to plug in  to solve for the value of a that gives the correct y-intercept.
 to solve for the value of a that gives the correct y-intercept.
Does that help clear things up?
 
        
             
        
        
        
Answer:
goodluck
Step-by-step explanation:
 
        
             
        
        
        
square 
Step-by-step explanation:
 
        
             
        
        
        
Answer:
-240
Step-by-step explanation:
500 - 800 + 60 
= -300 + 60 = -240
 
        
                    
             
        
        
        
y=4x-11 is the correct equation