AP EAMCET · Maths · Parabola
The equation of the directrix of parabola \(y^2-x+4 y+5=0\) is
- A 4y − 3 = 0
- B 4x − 3 = 0
- C 3x − 4 = 0
- D 3y − 4 = 0
Answer & Solution
Correct Answer
(B) 4x − 3 = 0
Step-by-step Solution
Detailed explanation
Given parabola is \(\begin{aligned} y^2-x+4 y+5 & =0 \\ y^2+4 y & =x-5 \\ y^2+4 y+4 & =x-5+4 \\ (y+2)^2 & =(x-1)\end{aligned}\) On comparing with general form of parabola…
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