InterviewSolution
Saved Bookmarks
| 1. |
Show that for any value of m the equation mx-y =4m-3 represents a straight line passing through a fixed point. What is the fixed point? |
|
Answer» `m_1x-y=4m_1-3-(1)` `m_2x-y=4m_2-3-(2)` `y=4m_1-3-m_1x` `m_2x-(3-4m+m_1x)=4m_2-3` `x(m_2-m_1)-3+4m_1=4m_2-3` `x(m_2-m_1)=4(m_2-m_1)` `x=4` `y=3-4m_1+m_1x` `y=3-4m_!+4m_1` `y=3` `P(4,3)`. |
|