gaokao 2011 Q5

gaokao · China · shanghai-arts Straight Lines & Coordinate Geometry Line Equation and Parametric Representation

5. If line $l$ passes through point $(3,4)$ and $(1,2)$ is a normal vector to it, then the equation of line $l$ is $\_\_\_\_$

5. If line $l$ passes through point $(3,4)$ and $(1,2)$ is a normal vector to it, then the equation of line $l$ is $\_\_\_\_$\\