A Linear Regression model. Y f x x 2 3x1. A normal line to the graph of a function f at the point xfx is defined to be the line perpendicular to the tangent line at that point.
This is illustrated in Figure 929.
Making statements based on opinion. Recall that when two lines are perpendicular their slopes are negative reciprocals. Y f x o f x o x x o The normal line to a curve at a particular point is the line through that point and perpendicular to the tangent. Use MathJax to format equations.