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kLejda5cou7llie
kLejda5cou7llie kLejda5cou7llie
  • 19-05-2016
  • Mathematics
Answered

What is the focal length of the parabola whose graph is shown? focus: (-3, 2.6) and directrix: (-0.6)

Verified Answer :

apologiabiology
apologiabiology apologiabiology
  • 19-05-2016

P=focal legnth is the distance from the focus to the vertex, which also is the disance from the directix to the vertex

therefor
distance from directix to focus=2 times focal legnth

find distance
horizontal distance
from y=-0.6 to y=2.6, that is distance ot 3 units
3/2=1.5
focal distance=1.5

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