Question 859893:  Find the vertex, focus, and directrix of the parabola given by the equation x^2 = -8y 
Thank you for your help 
 Answer by lwsshak3(11628)      (Show Source): 
You can  put this solution on YOUR website! Find the vertex, focus, and directrix of the parabola given by the equation  
x^2 = -8y 
parabola opens down with vertex at origin. 
Its basic form of equation: y=-4py 
vertex:(0,0) 
axis of symmetry: x=0 or y-axis 
4p=8 
p=2 
focus: (0,-2) 
directrix: y=2 
 
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