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AP EAMCET · Maths · Parabola

For the parabola y2+6y-2x+5=0, match the items in List-I with the suitable item in List-II given below:
List-I List-II
I Vertex A -32,-3
II Focus B 32,-3
III Equation of the directrix C 2x+5=0
IV Equation of the axis D 2x+y+3=0
    E y+3=0
    F -2,-3
The correct matching is

  1. A
    I II III IV
    F A E C
     
  2. B
    I II III IV
    F A C E
     
  3. C
    I II III IV
    A B C D
     
  4. D
    I II III IV
    F A C D
     
Verified Solution

Answer & Solution

Correct Answer

(B)

I II III IV
F A C E
 

Step-by-step Solution

Detailed explanation

Given: y2+6y-2x+5=0 ⇒y+32=2x+4 ⇒y+32=2x+2 The form: y-k2=4ax-h, where, the vertex is Vh,k Therefore, Vertex ≡-2,-3 Now, 4a=2⇒a=12 Now, we know that focus lies at a distance a from the vertex of the parabola. Therefore, -2+a=-2+12=-32 So, coordinates of…