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Find the focus, directrix, focal diameter, vertex and axis of symmetry for the parabola:

 `42.8 y = x^2` 


The focus is  

The directrix is  

The focal diameter is  

The vertex is  

The axis of symmetry is  

Be sure to enter each answer in the appropriate format. Hint: What is the appropriate notation for a line or a point?

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MathQuill
   x  x    n  |   | (   ) π DNE
   x    (   ) π DNE
( ) ( ] [ ) [ ] —∞ DNE
< > or All Real Numbers DNE
log logn ln n  | | e 
sin cos tan arcsin arccos arctan  
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