Equation of a Line (Leaving Cert Mathematics): Quizzes

All points that lie on that line

$y - y_1 = m(x - x_1)$

One point and the slope

$m = \frac{y_2 - y_1}{x_2 - x_1}$

$2x - 3y + 12 = 0$

They have the same slope

Slopes are negative reciprocals

$-\frac{1}{m}$

$ax + by + c = 0$

The y-intercept

General form

$-\frac{2}{5}$