anonymous
  • anonymous
http://s1142.photobucket.com/user/nancylam67/media/Screen%20Shot%202015-09-24%20at%206.36.24%20PM.png.html I need help number 9 only , thanks
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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chestercat
  • chestercat
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Nnesha
  • Nnesha
|dw:1443148206372:dw| now u can use the parabola equation to find p
anonymous
  • anonymous
ok, thanks
Nnesha
  • Nnesha
use the standard equation http://colalg.math.csusb.edu/~devel/precalcdemo/conics/src/parabola.html

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Nnesha
  • Nnesha
np let me know if u have a question
anonymous
  • anonymous
unable find focus ?
anonymous
  • anonymous
I did use standard but the answer not work out
Nnesha
  • Nnesha
alright show ur work what did yo uget ?
Nnesha
  • Nnesha
if the parabola opens up then we should use x^2=4py ^thats in the link
anonymous
  • anonymous
PD= PF F=( 0,y) P=(6,4) D=(6,y) ( 6-0)^2+(4-y)^2 = (6-6)^2+(4-y)^2 36=o
anonymous
  • anonymous
formula: y=1/4P*X^2
anonymous
  • anonymous
\[y=\frac{ 1 }{4P }X ^{2}\]
anonymous
  • anonymous
How I find P?
Nnesha
  • Nnesha
this might be a stupid question what's PD and PF in this question ?
Nnesha
  • Nnesha
ohh ye that's the same equation as x^2 =4py if we multiply both sides by 4p
Nnesha
  • Nnesha
use the order pair (6,4) where x =6 and y=4 plugin
anonymous
  • anonymous
F is the point of focus P is the point pass through parabola D is the point Directrix The not of Algebra 2 said
Nnesha
  • Nnesha
Cool.
anonymous
  • anonymous
you can look the link you send what is P?
Nnesha
  • Nnesha
my question was what's PF and PD `in this question`
Nnesha
  • Nnesha
i didn't read all of it in that link but according my notes p =distance
Nnesha
  • Nnesha
to*
Nnesha
  • Nnesha
\[\huge\rm (6)^2=4p(4)\] now u can solve for p
Nnesha
  • Nnesha
hope that helpd

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