Sec 3/4 E Math T04-Q09 - Equation of a perpendicular line

Sec 3/4 E Math T04-Q09 - Equation of a perpendicular line

Secondary 3
Original parallel to Sec3&4 E Math FA

The line \(l\) has equation \(y=3x+6\). Find the equation of the line perpendicular to \(l\) and passing through \(P(1,2)\).

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Answer:\(x+3y=7\).

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