Question

34. The directrix of the parabola x2 - 4x - 8y + 12 = 0 is :
(a) y = 0
(b) x = 1
(C) y = -1
(d) x = -1​

Answer 1

$\huge{\boxed{\overline{\underline{\mathfrak{\fcolorbox{cyan}{blue}{Answer}}}}}}$

=> Y = -1

• Given equations can be rewritten as

(x - 2)² = 8(y - 1)

This is the form of

X² = 4aY

Where

X = x - 2 , Y = y - 1 , a = 2

Equation of directrix is

Y = -a

=> Y - 1 = -1

=> Y = -1

silentlover45.❤️

Answer 2

Answer:

$\implies$ options no (C) y = -1