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Quadratic polynomial and the parabola (1 Viewer)

random-1005

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For

Make a sketch of the parabola showing the vertex, focus and directix.
y^2= -12(x-2)

vertex= ( 2,0)

focal length= 3

it is a sideways parabola open to the left

focus= (-1,0)

directrix: x=5

a few tricks but not too bad, probably Q6 2 unit hsc level
 

NewiJapper

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it was in q7 of our trials. thanks though ive never come across a sideways parabola before in all my study :/
 

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