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sloppycanada
 one year ago
Write the equation of a parabola with a vertex at (5, 2) and a directrix y = 1.
sloppycanada
 one year ago
Write the equation of a parabola with a vertex at (5, 2) and a directrix y = 1.

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sloppycanada
 one year ago
Best ResponseYou've already chosen the best response.0\[x+5 = \frac{ 1 }{ 12 }(y2)^2\]

amoodarya
 one year ago
Best ResponseYou've already chosen the best response.1directix is y=1 so parabola is vertical (x+5)^2=4p(y2)

sloppycanada
 one year ago
Best ResponseYou've already chosen the best response.0Oh so I find 'p' now?

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Do you have any question choices? sorry haven't done these in a long time lol

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0I remember now! So we first put it in vertex form. Typical vertex form is ;\[y=a(xh)^2+k\]

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Keep in mind that h is x, and k is y, so \[(h,k) = (x,y)\]

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0So we have the vertex (and forgot to mention, that h,k is the vertex) (5,2)

sloppycanada
 one year ago
Best ResponseYou've already chosen the best response.0Yup! And since it's not at (0,0) it means I have to add things. If I remember correct, it's the opposite sign that you're supposed to use.

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0we put them in, and now we get what?

sloppycanada
 one year ago
Best ResponseYou've already chosen the best response.0But I still need the 4p

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Well we still have to find a, and note the answer choice that you picked is wrong :/

sloppycanada
 one year ago
Best ResponseYou've already chosen the best response.0Which is something to do with "p"

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Or the the rate of change

Loser66
 one year ago
Best ResponseYou've already chosen the best response.1@amoodaray gave you the equation, why do you go on the complex way?

sloppycanada
 one year ago
Best ResponseYou've already chosen the best response.0I'm not sure how to find 'p'

Loser66
 one year ago
Best ResponseYou've already chosen the best response.1Is it not that "directrix y =1" given?? and it gives you p = 1?? am I right?

sloppycanada
 one year ago
Best ResponseYou've already chosen the best response.0Oh yeah..in that case... then my answer should be 1/4

Loser66
 one year ago
Best ResponseYou've already chosen the best response.1and the equation of parabola is x^2 =4py in your case, just put the vertex in

sloppycanada
 one year ago
Best ResponseYou've already chosen the best response.0x+5^2 = 1/4(y2)^2?

Loser66
 one year ago
Best ResponseYou've already chosen the best response.1\((x+5)^2=4(y2)\) open parentheses

sloppycanada
 one year ago
Best ResponseYou've already chosen the best response.0But that isn't one of my options...

Loser66
 one year ago
Best ResponseYou've already chosen the best response.1\((x^2+10x+25) = 4y 8\)

Loser66
 one year ago
Best ResponseYou've already chosen the best response.1\(4y=x^2+10x+33\) divide both sides by 4 what are your options?

Loser66
 one year ago
Best ResponseYou've already chosen the best response.1hey, they don't open parentheses and our answer is b,

Loser66
 one year ago
Best ResponseYou've already chosen the best response.1\((x+5)^2=4(y2)\) divide both sides by 4, you get b
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