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Formulaire: mathématiques - Géométrie - Ligne droite ⁄

Ligne droite ⁄

Définitions:

  • x1: x1-coordonner
  • x2: x2-coordonner
  • y1: y1-coordonner
  • y2: y2-coordonner
  • m: Pente
  • b: y-intercepter
  • f:
  • y: équation
Layer 1xxyy1122

Pente

\( m = \frac{y_2 - y_1}{x_2 - x_1} \)
m = Pente
y2 = y2-coordonner
y1 = y1-coordonner
x2 = x2-coordonner
x1 = x1-coordonner

Layer 1xxyy1122b

Principale forme

\( y = m \times x + b \)
y = équation
m = Pente
b = y-intercepter

\( y = \frac{y_2 - y_1}{x_2 - x_1} \times x + \left( y_2 - \frac{y_2 - y_1}{x_2 - x_1} \times x_2 \right) \)
y = équation
y1 = y1-coordonner
y2 = y2-coordonner
x1 = x1-coordonner
x2 = x2-coordonner
y2 = y2-coordonner
y1 = y1-coordonner
y2 = y2-coordonner
x1 = x1-coordonner
x2 = x2-coordonner
x2 = x2-coordonner

\( y = m \times x + \left( y_2 - m \times x_2 \right) \)
y = équation
m = Pente
y2 = y2-coordonner
m = Pente
x2 = x2-coordonner

\( y = m \times x + \left( y_1 - m \times x_1 \right) \)
y = équation
m = Pente
y1 = y1-coordonner
m = Pente
x1 = x1-coordonner

Deux points formulaire

\( y - y_1 = \frac{y_2 - y_1}{x_2 - x_1} \times \left( x - x_1 \right) \)
f =
y1 = y1-coordonner
y1 = y1-coordonner
y2 = y2-coordonner
x1 = x1-coordonner
x2 = x2-coordonner
x1 = x1-coordonner