Question 629586:  The path of a cliff diver as he dives into a lake,is given by the equation y=-[x-10]^2+75,where y metres is the divers height above the water and ,x meters is the horizontal distance travelled by the diver.What is the maximum height the diver is above the water? 
 Answer by ewatrrr(24785)      (Show Source): 
You can  put this solution on YOUR website!     
Hi, 
 y= -[x-10]^2+75  ||Parabola opening downward,  V(10,75)maximum point  
 max height the diver is above the water = 75m
 
the vertex form of a Parabola opening up(a>0) or down(a<0),    
where(h,k) is the vertex  and  x = h  is the Line of Symmetry 
The standard form is  , where  the focus is (h,k + p) 
  
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