SOLUTION: how do you find the vertex, focus and directrix of a parabola in the form {{{ x^2 + 6x - 4y + 1 = 0 }}}

SOLUTION: how do you find the vertex, focus and directrix of a parabola in the form {{{ x^2 + 6x - 4y + 1 = 0 }}}

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Question 832102: how do you find the vertex, focus and directrix of a parabola in the form

Answer by Fombitz(32388) (Show Source): You can put this solution on YOUR website!

Complete the square in x,

The vertex is therefore at (-3,-2)

The distance from the vertex to the focus is 4.
Since the parabola opens up, the focus is (1,-2).
The directrix is then

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