Straight Line Question 6
Question: If the lines $ y=3x+1 $ and $ 2y=x+3 $ are equally inclined to the line $ y=mx+4, $ then m = [ISM Dhanbad 1976]
Options:
A) $ \frac{1+3\sqrt{2}}{7} $
B) $ \frac{1-3\sqrt{2}}{7} $
C) $ \frac{1\pm 3\sqrt{2}}{7} $
D) $ \frac{1\pm 5\sqrt{2}}{7} $
Correct Answer: D
Show Answer
Answer:
Solution:
Þ $ 7m^{2}-2m-7=0 $
Þ $ m=\frac{1\pm 5\sqrt{2}}{7} $ .
BETA
