Pair Of Straight Lines Question 76
Question: Which of the equation represents the pair of perpendicular straight lines
Options:
A) $ y^{2}+xy-x^{2}=0 $
B) $ y^{2}-xy+x^{2}=0 $
C) $ x^{2}+xy+y^{2}=0 $
D) $ x^{2}+xy-2y^{2}=0 $
Show Answer
Answer:
Correct Answer: A
Solution:
Here $ a+b=0 $ .