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helpmetnx helpmetnx
  • 24-05-2016
  • Mathematics
Answered

The equation of the parabola whose focus is at (0, 5) and directrix at y = -5 is:

~ y = (1/20)x²

~ y = -(1/20)x²

~ x = (1/20)y²

Verified Answer :

helphelp123
helphelp123 helphelp123
  • 24-05-2016

for a parabola at vertex (0,0)
we see that we have to go up and down
therfor it opens up or down

since focus is above directix, it opens up
x^2=4Py
p is distance from directix to vertex
since it opens up, P is positive
from -5 to 0 is 5 units
x^2=4(5)y
x^2=20y
solve for y
divide both sides by 20
y=(1/20)x^2

first one

Answer Link
jaylenepool65
jaylenepool65 jaylenepool65
  • 27-04-2021

Answer:

ok i got it thx

Step-by-step explanation:

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