Question

find focal distance of the point (4,4) on parabola y²=4x
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Answer 1

Answer:

ANSWER

R.E.F image

y

2

=4x

focal distance = 10 units

comparing with y

2

=4ax

4a=4

a=1

concept : coordinates of parabola which is open rightward y

2

=4ax(a,0)

Focal distance = 2a

∴ coordinators of focus (1,0)

Focal distance =10

∴ x+1=10

x=9

y

2

=4×9 ∴ coordinators are =(9,6)

y=±6 =(9,-6)

Step-by-step explanation:

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