Respuesta :

silirobert15

We have:

  • (d) 4x + 6y = 9  <=>  y = -2/3 x + 3/2
  • (d') -3x + ny = 8  <=>  y = 3/n x + 8/n

So:  (d) ⊥ (d')

=> -2/3 × 3/n = -1

=> -2/n = -1

=> n = -2/-1

=> n = 2

p/s: I'm not sure

Ok done. Thank to me :>