Straight Line Question 40
Question: If the given lines $ y=m_1x+c_1,y=m_2x+c_2 $ and $ y=m_3x+c_3 $ be concurrent, then
Options:
A) $ m_1(c_2-c_3)+m_2(c_3-c_1)+m_3(c_1-c_2)=0 $
B) $ m_1(c_2-c_1)+m_2(c_3-c_2)+m_3(c_1-c_3)=0 $
C) $ c_1(m_2-m_3)+c_2(m_3-m_1)+c_3(m_1-m_2)=0 $
D)None of these
Correct Answer: A
Show Answer
Answer:
Solution:
Þ $ m_1(c_2-c_3)+m_2(c_3-c_1)+m_3(c_1-c_2)=0 $ .Note: Students should remember this question as a formula.
BETA
