Given the point (1, 2), find the equation of a line on which it lies. How many such equations are there?

Explanation

In geometry, there exists infinitely many points passing through a given point.


The general equation of line is as follows:


ax + by + c = 0 , where a, b, and c are real numbers.


So, if the line pass through the point ( 1,2), we can get relation between a, b and c, as follows:


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