Khan/khan-exercises — Issue #6708: Parabola intuition 1 - labeling
Author: KhanBugz
Created: 2011-11-19 20:17:09+00:00
State: open
Labels: ie9, win7, wrong-or-unclear

I would like to suggest that the problem states the correct labels for a parabola. In the equation of a parabola, ( y - k )^2 = a( x - h )^2, a is the directix (the distance from the x axis and the foci. k is the horizontal shift and h is the vertical shift (which is okay as the vertex coordinates, I guess).

[parabola_intuition_1.html?seed=99&problem=0](http://sandcastle.khanacademy.org/media/castles/Khan:master/exercises/parabola_intuition_1.html?seed=99&problem=0&debug)

[Answer timeline](http://sandcastle.khanacademy.org/media/castles/Khan:master/exercises/parabola_intuition_1.html?seed=99&problem=0&debug&activity=%5B%5D)

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