TS EAMCET 2017 Code A Solved Paper

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=−‌‌

1

2

x+‌‌

5

2

=0
2x+5=0