Parallel Lines (Grade 11 NSC Matric Mathematics): Flashcards

Straight lines that never intersect

They have equal gradients

$m_1 = m_2$

The y-intercept

Same gradient, different y-intercepts

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

$y = mx + c$

$m = \tan θ$

Convert to $y = mx + c$ form

When you have a point and gradient