Pair Of Straight Lines Question 86
Question: The equation $ xy+a^{2}=a(x+y) $ represents
[MP PET 1991]
Options:
A) A parabola
B) A pair of straight lines
C) An ellipse
D) Two parallel straight lines
Show Answer
Answer:
Correct Answer: B
Solution:
$ xy+a^{2}=a(x+y). $ Firstly always check for pair of straight lines i.e., $ \Delta =0 $