Respuesta :

mhanifa

Answer:

  • 12) 1.5(m - n)/b
  • 13) 2t/(2c + d)

Step-by-step explanation:

Question 12)

Slope between the points:

  • A(a + b, 4m - n) and B(a - b, m + 2n)

Use slope formula:

  • Slope = (m + 2n - 4m + n)/(a - b - a - b) =
  •              (-3m + 3n)/(-2b) =
  •              (-3)(m - n)/(-2)b
  •              1.5(m - n)/b

Question 13)

Slope between the points:

  • C(3c - d, s + t) and D(c - 2d, s - t)

Use slope formula:

  • Slope = (s - t - s - t)/(c - 2d - 3c + d) =
  •              (-2t)/(-2c - d) =
  •              (-2)t/(-1)(2c + d)
  •              2t/(2c + d)

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