Question

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

Answer 1

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