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Parametric equations of a line through given co-ordinates

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Find a set of parametric equations for the line through P = (1,1) and Q = (2,4)so that P = (x(0)), (y(0)) and Q = (x(1)), (y(1))

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1. Choose one of the points as the starting point.
We have to select P(1,1)

2. Consider the x ...

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