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QUESTION IMAGE

find the slope of the line through each pair of points. 1) (19, -16), (…

Question

find the slope of the line through each pair of points.

  1. (19, -16), (-7, -15)
  2. (1, -19), (-2, -7)
  3. (-4, 7), (-6, -4)
  4. (20, 8), (9, 16)
  5. (17, -13), (17, 8)
  6. (19, 3), (20, 3)
  7. (3, 0), (-11, -15)
  8. (19, -2), (-11, 10)

Explanation:

Response
1) Puntos \((19, -16)\) y \((-7, -15)\)

Step1: Recuerda la fórmula de la pendiente \(m = \frac{y_2 - y_1}{x_2 - x_1}\)

Tomamos \((x_1, y_1) = (19, -16)\) y \((x_2, y_2) = (-7, -15)\)

Step2: Sustituir en la fórmula

\(m = \frac{-15 - (-16)}{-7 - 19} = \frac{-15 + 16}{-26} = \frac{1}{-26} = -\frac{1}{26}\) (Nota: La escritura en la imagen parece tener un signo erróneo, la pendiente correcta es \(-\frac{1}{26}\))

Step1: Usar la fórmula de la pendiente \(m = \frac{y_2 - y_1}{x_2 - x_1}\)

Con \((x_1, y_1) = (1, -19)\) y \((x_2, y_2) = (-2, -7)\)

Step2: Sustituir valores

\(m = \frac{-7 - (-19)}{-2 - 1} = \frac{-7 + 19}{-3} = \frac{12}{-3} = -4\)

Step1: Aplicar la fórmula \(m = \frac{y_2 - y_1}{x_2 - x_1}\)

Tomamos \((x_1, y_1) = (-4, 7)\) y \((x_2, y_2) = (-6, -4)\)

Step2: Calcular

\(m = \frac{-4 - 7}{-6 - (-4)} = \frac{-11}{-6 + 4} = \frac{-11}{-2} = \frac{11}{2}\)

Answer:

\(-\frac{1}{26}\)

2) Puntos \((1, -19)\) y \((-2, -7)\)