Respuesta :

mhanifa

Answer:

  • a = 4

Step-by-step explanation:

Given

  • f(x) = a(x+1)(x-3)
  • Vertex = (1, -16)

To find

  • Value of a

Solution

Substituting he coordinates:

  • -16 = a(1 + 1)(1 - 3)
  • -16 = a(2)(-2)
  • -16 = -4a
  • a = 4

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