kayleesmith72 kayleesmith72
  • 06-10-2018
  • Mathematics
contestada

Given the midpoint (1.5,1.5) and the endpoint (5,7) where is the other endpoint located

Respuesta :

gmany
gmany gmany
  • 09-10-2018

The formula of a midpoint:

[tex]M_{AB}\left(\dfrac{x_A+x_B}{2},\ \dfrac{y_A+y_B}{2}\right)[/tex]

We have:

[tex]M(1.5,\ 1.5)\to x_M=1.5,\ y_M=1.5\\A(5,\ 7)\to x_A=5,\ y_A=7[/tex]

Substitute

[tex]\dfrac{5+x_B}{2}=1.5\qquad|\cdot2\\\\5+x_B=3\qquad|-5\\\\x_B=-2\\\\\dfrac{7+y_B}{2}=1.5\qquad|\cdot2\\\\7+y_B=3\qquad|-7\\\\y_B=-4[/tex]

Answer: (-2, -4)

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