Mathematics · essential
Slope of a line through two points for JEE
The slope of a line, parallel and perpendicular lines
Formula
\(m=\dfrac{y_2-y_1}{x_2-x_1}\)
Variables: Line through \((x_1,y_1)\) and \((x_2,y_2)\).
Conditions: \(x_2\ne x_1\).
Equation of line, angle, parallel/perpendicular tests.