Find the negative reciprocal of the original line's slope in order to obtain the equation of a perpendicular line to a given line. The perpendicular line will have a slope of `-\frac{1}{m}` if the slope of the original line is \( m \). Next, substitute the slope and a point where the perpendicular line passes in the point-slope form of a line equation \( y - y_1 = m(x - x_1) \).

Algebra 1

Linear Relationship