how do you find equation of line joining two points

Question : Find the equation of line joining two points (1,3) and (2,7). Solution : Equation of line joining two points \[(x_1\ ,y_1),\ (x_2,\ y_2)\] is given as \[y-y_1=\frac{y_2-y_1}{x_2-x_1}\left(x-x_1\right) (1)\] For the given two points (1, 3) and (2, 7)…

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