SOLUTION: Write the equation of the directrix of the conic section shown below. Write your answer without using spaces. x^2+6x-4y+5=0
Thank you.
Algebra.Com
Question 1100797: Write the equation of the directrix of the conic section shown below. Write your answer without using spaces. x^2+6x-4y+5=0
Thank you.
Answer by Fombitz(32388) (Show Source): You can put this solution on YOUR website!
Get the parabola into focus form by completing the square,
Compared to the focus form,
.
.
(-3,-1) is the vertex.
So the focus is (-3,-1)+(0,1)=(-3,0).
The directrix is then,
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.
.
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