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sloppycanada
 one year ago
Parabola Help
How do I find the focus just from looking at a graph?
In the link below I have a screenshot of a parabola. I think the Focus is (4,0)
http://gyazo.com/ed37c6ae63a875a4d4a05b6fbc6d9591
In addition to that, in the following graph, is the directrix of parabola? I think it is x = 5
http://gyazo.com/7377f7108554c08443c93d78957df350
sloppycanada
 one year ago
Parabola Help How do I find the focus just from looking at a graph? In the link below I have a screenshot of a parabola. I think the Focus is (4,0) http://gyazo.com/ed37c6ae63a875a4d4a05b6fbc6d9591 In addition to that, in the following graph, is the directrix of parabola? I think it is x = 5 http://gyazo.com/7377f7108554c08443c93d78957df350

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ganeshie8
 one year ago
Best ResponseYou've already chosen the best response.0By definition of parabola, the distances from anypointontheparabola to the directrix and focus are equal : dw:1435565663127:dw

sloppycanada
 one year ago
Best ResponseYou've already chosen the best response.1Oh okay, so for the first one the correct answer would be (5,0)?

sloppycanada
 one year ago
Best ResponseYou've already chosen the best response.1Am I right on the second one?

ganeshie8
 one year ago
Best ResponseYou've already chosen the best response.0x = 5 is the equation of directrix line, yes

ganeshie8
 one year ago
Best ResponseYou've already chosen the best response.0dw:1435566256822:dw

sloppycanada
 one year ago
Best ResponseYou've already chosen the best response.1Write the equation of a parabola with a vertex at (0, 0) and a directrix y = 1. What is the equation of the parabola with a focus at (0, 5) and directrix y = 5? Write the equation of a parabola with a vertex at (5, 2) and a directrix y = 1.dw:1435566317796:dw

sloppycanada
 one year ago
Best ResponseYou've already chosen the best response.1@ganeshie8 Am I right? I'm not sure what the medal means.
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