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Sir pls I no 1e.g for the equation of a straight line . why did we multiply thru by two.
![What is Slope of a Line? Slope Formula, Rise Over Run & Equation of a Line - [7-4-18]](http://i.ytimg.com/vi/0OMitbtWLpk/mqdefault.jpg)
![What is Slope of a Line? Slope Formula, Rise Over Run & Equation of a Line - [7-4-18]](/img/tr.png)
Sir pls I no 1e.g for the equation of a straight line . why did we multiply thru by two.