14-02-2021
Mathematics

contestada

If (-2,1) is the midpoint of the line segment ST and the coordinates of S are (3,9), find the coordinates of T.

Respuesta :

miaisalpha miaisalpha

14-02-2021

Answer:

T = (-7,-7)

Step-by-step explanation:

S = (3,9) = (x₁,y₁)

M = (-2,1) = (x,y)

T = (2x-x₁,2y-y₁)

= (2×-2-3,2×1-9)

=(-4-3,2-9)

=(-7,-7)

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