Flashcards : Mastering Line Equations and Properties — 12 cartes

(y₂ - y₁)/(x₂ - x₁)

Undefined slope, x = constant

Line rises from left to right

Negative reciprocal, m₁ × m₂ = -1

Points where line crosses axes

Set y=0, solve for x

Set x=0, solve for y

Same slope, different intercepts

Calculate slope, then use point-slope form

y = mx + b, where b is y-intercept

Solve for y to find slope from Ax + By = C

Zero slope, y = constant