Pair Of Straight Lines Question 105
Question: The combined equation of bisectors of angles between coordinate axes, is
Options:
A) $ x^{2}+y^{2}=0 $
B) $ x^{2}-y^{2}=0 $
C) $ xy=0 $
D) $ x+y=0 $
Show Answer
Answer:
Correct Answer: B
Solution:
Equations of axes are $ x=0,\ y=0 $ .
Combined equation is $ xy=0 $ .
Therefore, combined equation of bisectors is $ \frac{x^{2}-y^{2}}{0}=\frac{xy}{1/2}\Rightarrow x^{2}-y^{2}=0 $ .
BETA
