If lines a_1 x-b_1 y+c_1=0 and a_2 x+b_2 y+c_2=0 are mutually per… - Vidyadip

MCQ

If lines $a_1 x-b_1 y+c_1=0$ and $a_2 x+b_2 y+c_2=0$ are mutually perpendicular then :

A
$a_1 b_2+a_2 b_1=0$
B
$a_1 a_2+b_1 b_2=0$
C
$a_1 b_2-a_2 b_1=0$
✓
$a_1 a_2-b_1 b_2=0$

✓

Answer

Correct option: D.

$a_1 a_2-b_1 b_2=0$

D

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