Straight Line Question 54
Question: If the lines $ x+q=0,y-2=0 $ and $ 3x+2y+5=0 $ are concurrent, then value of q will be [DCE 2002]
Options:
A)1
B)2
C)3
D)5
Correct Answer: C
Show Answer
Answer:
Solution:
Þ $ \begin{vmatrix} 1 & 0 & q \\ 0 & 1 & -2 \\ 3 & 2 & 5 \\ \end{vmatrix} =0 $
Þ $ 1(5+4)-0+q(0-3)=0 $
Þ $ 9-3q=0 $
Þ $ q=3. $
BETA
