SOLUTION: 0=y^2-8x+4y-20 ive tried everything but i can't get the answer. its asking for the equation in standard form,vertex,focus,directrix,and the functions in terms of y.please help i ne

Question 545095: 0=y^2-8x+4y-20 ive tried everything but i can't get the answer. its asking for the equation in standard form,vertex,focus,directrix,and the functions in terms of y.please help i need to know this to pass my math class.
Answer by stanbon(75887) (Show Source): You can put this solution on YOUR website!
its asking for the equation in standard form, vertex, focus, directrix,and the functions in terms of y.
----------------
y^2-8x+4y-20 = 0
-------------
y^2+4y+? = 8x-20 + ?
------
y^2+4y+4 = 3x-20+4
(y+2)^2 = 3x-16
3x = (y+2)^2+16
x = (1/3)(y+2)^2 + (16/3)
------
vertex: (-2,16/3)
---
4p = 1/3
p = 1/12
directrix: x = -2-(1/12) ; x = -25/12
focus: -2+1/12 = 23/12 :::Ans: (23/12 , 16/3)
-------------
Cheers,
Stan H.
===============

RELATED QUESTIONS
0=y^2-8x+4y-20 ive tried everything but i can't get the answer. its asking for the... (answered by Edwin McCravy)

Write the vertex form for a parabola with the given characteristics. 1. vertex ( 0, 0) (answered by ewatrrr)

Write the vertex form for a parabola with the given characteristics. 1. vertex ( 0, 0) (answered by lwsshak3)

sqrt(x^2-2)/sqrt(7 x-25)= sqrt(2) I need help its me for Find all real solutions of the (answered by ankor@dixie-net.com)

Find the standard form of the equation of the parabola with a focus at (-4, 0) and a... (answered by Edwin McCravy,AnlytcPhil)

I tried to solve this problem but I am not sure about my answer. The thing is, I solved... (answered by fractalier)

I can never get this!!! Please Help!!! For Each Of The Conics in standard form, list... (answered by stanbon)

Write an equation in standard form for the hyperbola with center (0,0) , vertex (0,6) ,... (answered by lwsshak3)

solve the following equation using the quadratic formula and give answer in standard form (answered by solver91311)