Respuesta :

Answer:

Ordered pair of YZ is (-5,-7) and magnitude of YZ is 8.602

Step-by-step explanation:

Given data:

Two pairs Y (5,4) and Z (0, -3)

To find: ordered pair of YZ

YZ = Z - Y = (0-5, -3-4)

                 = (-5, -7)

Hence ordered pair of YZ is (-5,-7)

To find: magnitude of YZ.

Here Y and Z are initial and final points of vector. Magnitude of YZ is distance between points Y and Z. Distance formula is

Distance = [tex]\sqrt{(x2-x1)^{2} + (y2-y1)^{2} }[/tex]

magnitude of YZ =  [tex]\sqrt{(0-5)^{2} + (-3-4)^{2} }[/tex]

                             = [tex]\sqrt{74}[/tex]

                             = 8.602

Another method:

magnitude of YZ = |YZ|

|YZ| = [tex]\sqrt{(-5)^{2} + (-7)^{2} }[/tex]  ...............(since |xy| = [tex]\sqrt{(x)^{2} + (y)^{2} }[/tex]

       = [tex]\sqrt{74}[/tex]

       = 8.602

magnitude of YZ = 8.602

   

Answer:

D

Step-by-step explanation:

(-5,-7);√74 units