The perpendicular from the origin to the line `y = m x + c`meets it at the point `(1, 2)`. Find the values of m and c.

Explanation

The given equation of the line is `y = mx + c.`


From the given condition, the perpendicular from the origin meets the given line at `(-1, 2).`


Hence, the line joining the points `(0, 0)` and `(-1, 2)` is perpendicular to the given line.


The slope of the line joining `(0, 0)` and `(-1, 2)` is


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