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RE: Writing Equation of a Line Passing Through Two Given Points
But if the line is vertical, that is , x1 =x2? So X2-X1 = 0, but you can't divide by zero.
But if the line is vertical, that is , x1 =x2? So X2-X1 = 0, but you can't divide by zero.
I did a post on equation of horizontal and vertical lines. Vertical lines have undefined slope or infinite slope. If X2 - X1 = 0 that means line is vertical and it's equation will be X = Constant (that constant will be the x-coordinate of the given points)