Respuesta :

Answer:

AB = (- 4, 5 )

Step-by-step explanation:

AB = b - a ( a and b are the position vectors )

AB = (4, - 2 ) - (8, - 7 ) ← subtract corresponding components

     = (4 - 8, - 2 - (- 7))

    = (- 4, - 2 + 7 )

    = (- 4, 5 )

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