Consider the given equation. y2+6y−2x=−5 y2+6y+9=2x−5+9 (y+3)2=2x+4 (y+3)2=2(x+2) Compare the above equation with the standard equation of parabola. 4a=2 a=
1
2
And the vertex of the parabola is (-2,-3) The equation of the directrix is calculated as x+2=−