Geo2.7

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Find the equation of the straight line passing through the points (1,1),(2,3)\,

The equation of the straight line passing through two points is

y-y_{1}=m(x-x_{1})\, where m is a slope.

y-1={\frac  {3-1}{2-1}}(x-1)\,

y-1=2x-2\,

y-2x+1=0\,


The equation of the straight line is y-2x+1=0.


Main Page:Geometry:Straight Lines-I