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anonymous
 one year ago
Find the standard form of the equation of the parabola with a focus at (7, 0) and a directrix at x = 7.
anonymous
 one year ago
Find the standard form of the equation of the parabola with a focus at (7, 0) and a directrix at x = 7.

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anonymous
 one year ago
Best ResponseYou've already chosen the best response.0lol this might be 12 grade work lol cuz i never heard of it

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0its precalc @*ImaBeMe*

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0do you know whats special about a focus and directrix

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0kinda not really @dan915

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0okay basically for focus if u fire any line at into the parabola it will reflect off into the focus

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0dw:1440020061995:dw

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0dw:1440020159826:dw

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0like that all vertical lines that bounce off the parabola will reflect into the focus

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0dw:1440020223165:dw

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0do you understand the focus now?

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0yes but is there an equation i cant use or something @dan915

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0well u are gonna solve for that

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0you need to know what a focus and directrix is to solve for it

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0dw:1440020416431:dw

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0the vertex has to be at 0,0 because it has to be in the middle of the directrix and the focus now you need some more points so you can solve for the whole parabola equation

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0dw:1440020622812:dw

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0dw:1440020708157:dw

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0wait im confused? @dan915

campbell_st
 one year ago
Best ResponseYou've already chosen the best response.0here is an easy method that uses the focal length and the standard form in this case of \[4a(x  h) = (y  k)^2\] (h, k) is the focus and a is the focal lengthdw:1440022451273:dw
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