Respuesta :

Answer:

y = -1/3x + 10

Step-by-step explanation:

  • slope perpendicular to 3 is -1/3
  • plug what you know into y=mx+b
  • 7 = -1/3(3) + b
  • simplify
  • 7 = -3 + b
  • add 3 to both sides
  • b = 10